The EPA has made numerous efforts to lower air pollution, and what they have accomplished is described here.
To be able to respond to this question, we must contrast the pollutant concentrations at the start of the monitoring (in 1980) with the values at the conclusion (in 2010). We are unable to include PM10 and PM2.5 values from 1980 in our study since we are unable to view them. We can then examine lead, ozone, NO2, SO2, and CO, with lead showing the greatest drop as of 2010. EPA experts create cutting-edge techniques for an accurate and precise measurement of these contaminants in outdoor air to support monitoring operations. States and other monitoring organizations use these techniques, known as Federal Reference Methods (FRMs), to evaluate the implementation steps required to meet the federal "Clean Air Act's National Ambient Air Quality Standards."
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Mamadou leans a 18-foot ladder against a wall so that it forms an angle of 75^{\circ}
∘
with the ground. What’s the horizontal distance between the base of the ladder and the wall? Round your answer to the nearest tenth of a foot if necessary.
The horizontal distance between the base is given as 4.823 meters
How to solve for the horizontal distanceTo find the distance, we would have to make use of the trigonometric formula
Tangent = opposite / adjacent
We know that the angle is 75 degrees, so we can substitute this value into the formula:
tan(75) = h / x
We also know that the length of the ladder is 18 feet, so we can substitute this value for h:
tan(75) = 18 / x
To find the value of x, we can solve for x by dividing both sides of the equation by 18:
x = 18 / tan(75)
The horizontal distance between the base of the ladder and the wall is x = 18 / tan(75)
x = 18 / 3.732
x = 4.823 meters
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The horizontal distance between the base of the ladder and the wall is 2.4 feet.
How can we calculate the base of the ladder?To find the horizontal distance between the base of the ladder and the wall, we can use the tangent function of the angle that the ladder makes with the ground.
tan(75) = Opposite / Adjacent
Opposite = 18 (length of ladder)
Adjacent = x (horizontal distance between base of ladder and wall)
So,
tan(75) = 18/x
Solving for x, we get
x = 18/tan(75)
rounding to the nearest tenth of a foot, we get x= 2.4
So, the horizontal distance between the base of the ladder and the wall is 2.4 feet.
Therefore, the correct answer is as given above
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Can someone help me, please?
North Korea is an example of a dictatorship.
Both parliamentary monarchies and constitutional monarchies have monarchs whose power is restricted in some way.
What is a dictatorship?Generally, A dictatorship is a style of governance that is defined by a leader or group of leaders who have governmental powers with very few or no constraints on them. This kind of government is also known as a one-man rule or a one-party rule. A dictator is the name given to the person in charge of a dictatorship.
What exactly is a dictatorship, and what are some examples?A dictatorship may refer to either a government or a social situation in which one person is in charge of making all of the rules and decisions and no one else has any influence.
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Who was the most important ruler of the triple alliance
Germany's Otto Von Bismarck, Chancellor at the time, was the brains behind the Triple Alliance.
How does Triple Alliance work?Germany, Austria-Hungary, and Italy formed the Triple Alliance, a covert alliance, in May 1882. It was renewed on a regular basis until World War I. Since 1879, there has been a close alliance between Germany and Austria-Hungary. Soon after the French defeated Italy's objectives in North Africa, Italy enlisted their assistance in its fight against France.
What are the Triple Alliance and the Triple Entente?In the event that one of its allies was attacked, each country vowed to defend them. Three countries formed an alliance known as the Triple Alliance: Germany, Austria-Hungary, and Italy. The France, Russia, and England-led Triple Entente stood in their way. War was the result of these intricate tensions.
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When we combine latitude and longitude we are giving what at a place
Meridians of longitude and parallels of latitude create a framework or grid that allows precise positions to be established in relation to the prime meridian and the Equator: a location with the coordinates 40° N, 30° W.
Latitude and longitude provide us with what?The grid system we use to pinpoint precise or absolute positions on the surface of the Earth is made up of latitude and longitude. To pinpoint a precise location, utilize latitude and longitude. When locating landmarks, latitude and longitude are also useful. The coordinates at a geographic coordinate system are expressed in latitude and longitude. Use the name of the location, the city, state, or the address to do a search. You may also click on the spot on the map to obtain the lat/long coordinates.
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What did Freud call dreams?
So, according to Freud, there are two different kinds of dreams: manifest dreams and latent dreams. According to him, the latent dream is the actual dream, and it is what dream interpretation seeks to make known.
What is dreaming?A dream is a collection of ideas, thoughts, and experiences which frequently occur suddenly and spontaneously in the mind during specific sleep stages. The average length of a dream is between five to twenty minutes, however the dreamer can perceive a significantly longer duration. An average person dreams for two hours each night. The nature and function of dreams have piqued curiosity in science, philosophy, & religion throughout recorded history. The first application of dream interpretation in psychotherapy dates back to the third millennium BCE with the Babylonians. Even earlier than that, the ancient Sumerians used it. Oneirology is the term used in science to describe the study of dreams.
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When plants that are heterozygous for seed shape and have round seeds are crossed what is the probability that the offspring will have wrinkled seeds brainly?
The likelihood that plants with round seeds that are heterogeneous for seed shape will have offspring with wrinkled seeds is 1/4 to 25%.
The complete genetic composition of an organism is referred to as its genotype. An organism's expressed traits (phenotype) are determined by its genotype. The likelihood that plants with round seeds that are heterogeneous for seed shape will have offspring with wrinkled seeds is therefore 1/4 or 25%. missing pieces. How likely is it that plants that are heterogeneous for round seeds would produce offspring with wrinkled seeds?25% increase. 100 % B. 7.5 percent C. 100 % D. When a person is heterogeneous, they have two distinct alleles, or variations, of the same gene. In this instance, one plant contains an allele that causes round seeds and another that causes wrinkled seeds, and both plants have both of these alleles. Each progeny of a cross between these two plants will receive one allele for seed form from each parent.
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Is wood a renewable resource?
When correctly managed, trees are a sustainable, regenerative resource for future generations. Wood is the resource that is most abundantly renewable. a high-tech alternative to materials that produce more carbon.
A renewable resource, often referred to as a flow resource, is a type of natural resource that may be replenished to make up for any amounts that have been used up or exhausted. Through reproduction or other cyclical activities, this replenishment can happen spontaneously over a short period of time on a human time scale. These are referred to as permanent resources when the rate of resource recovery is most likely to never surpass a human time scale. The Earth's ecosphere and natural environment are largely composed of renewable resources. A resource's life-cycle assessment can be used to assess how sustainable it is, in large part. In some definitions of renewable resources, agricultural output, including agricultural products, and to some extent water resources may also be incorporated.
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How can we use the distributive property to find an expression equivalent to 15(x+2)? Place the steps in order.
pls?
CLEAR CHECK
Step 1
Step 2
The value of 15(x + 2) according to distributive property will be 15x + 30.
What is the distributive property about?The distributive property states that multiplying the sum of two or more addends by a number yields the same outcome as multiplying each addend separately by the number and adding the products together.
According to the distributive property of algebraic expressions, each term in an expression's sum or difference must be multiplied by a number outside of parentheses.
The value of 15(x + 2) will be:
= (15 × x) + (15 × 2)
= 15x + 30
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Applying the distributive property formula the expression can be solved as
a×( b + c) = ab + ac therefor using the distributive property formula to find the expression equivalent to 15(x+2) would be 15x + 30.
Applying Distributive property formulaCan be express as : a×( b + c) = ab + ac
Therefor applying the formula a×( b + c) = ab + ac =
15(x + 2)
= (15 × x) + (15 × 2)
= 15x + 30
therefor, the expression equivalent to 15(x+2) would be 15x + 30
What is Distributive Property?The distributive property is the distributive law of multiplication over addition and subtraction, this means that the distributive law is applicable to addition and subtraction.
The distributive property law as applicable to addition states that an expression that is given in form of a (b + c) can be solved as a × (b + c) = ab + ac.
The distributive law as applicable to subtraction states that an expression that is given in form of a (b - c) = can be solved as ab - ac.
Therefor integer A is distributed between the other two integers as solved as above.
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What land-form is located west of the Adriatic Sea?
Answer: Is it the compact Italian city of Venice with its renowned canals situated on a small, fish-shaped island in the Laguna Veneta at the northwest corner of the Adriatic Sea?
Explanation:
Is Fish renewable or nonrenewable?
Fish, shellfish, and marine algae populations might naturally repopulate. They can be replenished. To put it another way, we can gather fish without jeopardizing the species as long as we stay inside the established bounds.
Sustainability is a constant concern when it comes to energy sources. For us to heat our homes, power our cities, and operate our cars, resources must produce adequate energy. However, it's equally crucial to think about how these resources might be used in the long run. Some resources will essentially never be depleted. These have the label "renewable resources." Additionally, clean energy is produced by renewable resources, which means fewer emissions of greenhouse gases and other pollutants that worsen climate change.
Renewable energy sources are able to provide a consistent source of clean energy that cannot be exhausted.
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Is there a renewable oil?
Answer:
There is no such thing as "renewable oil" because oil is a fossil fuel, which means it is formed from the remains of ancient plants and animals that lived millions of years ago. Fossil fuels are not renewable resources because they take millions of years to form and are being depleted much faster than they can be replenished.
However, there are alternatives to fossil fuels that are considered renewable energy sources, such as solar, wind, hydroelectric and geothermal.
Explanation:
what giant ocean once surrounded the ancient supercontinent pangea?
Answer:
Panthalassa
Explanation:
HELP pls will mark you the brainliest
The Spanish conquistadors conquered large parts of South America. Which
of the following was a result of the Spanish conquest?
O A. Protestant religions and ceremonies
B. Spread of disease, including smallpox, to native populations
C. Extinction of animals native to the region, including pack animals
D. Improvement in architecture, including high, terraced cities
Answer:
I think is B
Explanation:
because when the Spanish conquistadors they went to America they spread many diseases.
What form of agriculture is found in all regions of the country?
Answer:
Explanation:
subsistence agriculture
Has air quality improved over the last 30 years?
Answer:
No it has got worse
Explanation:
This is because the earth is getting more polluted
Why does northwestern europe have a generally mild climate compared with other places at the same latitude?
Answer:
Because of the hemisphere
Explanation:
It is in the northern hemisphere. The different hemispheres have different zones. It just depends what time of year because the climates aren't always warm.
What are the 4 types of political organizations?
Answer:
There are many different ways to classify political organisations, but one common framework is to categorise them into four types:
Political parties: These are organisations that seek to win elections and hold political power. They typically have a defined ideology or platform and recruit candidates to run for office under their banner.
Interest groups: These are organizations that seek to influence public policy without necessarily seeking to hold political power.
Pressure groups: These are similar to interest groups but tend to be less professional. They are often not established and are not necessarily registered as legal entities.
Authoritarian: These organisations are characterised by a strong central government that has complete control over the political system.
Explanation:
Hello, can you help me please : synthesis of a dozen lines showing that the resources and constraints of polar routes make them more regional than international routes
Below are a dozen lines synthesizing how the resources and constraints of polar routes make them more regional than international routes:
Polar routes, such as those crossing the Arctic and Antarctic regions, are often limited by harsh weather conditions and a lack of infrastructure.These routes require specialized equipment and trained personnel, making them less accessible for international travel.The limited number of airports and navigation aids in polar regions also restrict the number of flights and destinations.The availability of fuel and emergency landing options is also limited on polar routes.The remoteness of polar regions also makes maintenance and resupply of aircraft more challenging.The high cost of operating in these regions also makes polar routes less attractive for international travel.The limited demand for travel to and from polar regions also makes it less economically viable for airlines to operate international routes.The lack of international agreements and regulations for polar routes also adds to the operational challenges and costs.The shorter daylight hours during certain seasons also restrict the number of flights that can operate on polar routes.The limited number of polar-capable aircraft also limits the capacity for international travel on these routes.The potential impact on the fragile polar ecosystems and the impact of human activity on these regions also limits the growth of international travel on polar routes.Overall, the resources and constraints of polar routes make them more suited for regional rather than international travel.What are the Polar routes about?The information about how the resources and constraints of polar routes make them more regional than international routes are explain thus:
Weather conditions in polar regions, such as extreme cold, high winds, and low visibility, make flying in these regions more challenging and dangerous. This requires specialized equipment and trained personnel, which makes it less accessible for international travel.
The limited number of airports and navigation aids in polar regions also restrict the number of flights and destinations that are possible. This makes it less feasible for airlines to operate regular international routes.
Lastly, The remoteness of polar regions also makes it difficult to provide the necessary support and maintenance for aircraft, which increases the operational cost and risks.
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During the summer months in Earth's Northern Hemisphere, carbon absorption of plants on land increases.
Which statement best describes the reason for this?
Select one:
Sunlight is more abundant in summer months, which causes plants to carry out more photosynthesis.
Summer months have less cloud cover than usual, and this reduces plants' capacity for carrying out photosynthesis.
In summer months, people burn less fuel for heating, which means plants do not get enough carbon dioxide.
Summer months are often very dry, and plants have difficulty carrying out photosynthesis in such conditions.
During the summer months in Earth's Northern Hemisphere, carbon absorption of plants on land increases because sunlight is more abundant in summer months, which causes plants to carry out more photosynthesis.
What is Photosynthesis?Utilizing a process called photosynthesis, plants and other living things may transform light energy into chemical energy that can then be released through cellular respiration to power their activities.
Green plants and certain other organisms convert light energy into chemical energy through a process called photosynthesis. Light energy is gathered and utilized during photosynthesis in green plants to transform water, carbon dioxide, and minerals into oxygen and energy-rich organic molecules.
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How did the railroad change America?
Some of the ways the railroad changed America include: decreased travel time and the creation of a more interconnected society.
The American railroads created a more interconnected society. Also, because of the decreased travel time, counties were able to work together more easily. This, of course, would strengthen the American economy.
The available markets for goods were expanded since the advent of a railroad. The American railroads allowed the movement of a wider variety of goods much farther distances. These railroads had a two-fold effect on the economy: sellers found new markets to sell their goods and individuals were able to obtain goods that had been previously very difficult to get or unavailable.
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What made Australopithecus different from apes?
Australopithecus species lack canine tooth size sexual dimorphism and have canines that are significantly smaller than those of extant apes, only marginally larger than those of females.
What are Australopithecus?Australopithecus, (Latin for "southern ape") (genus Australopithecus), a group of extinct primates known from a succession of fossils discovered in eastern, north-central, and southern Africa that are closely related to, if not the ancestors of, modern humans. Australopithecus species flourished between 4.4 million and 1.4 million years ago , throughout the Pliocene and Pleistocene epochs (which lasted from 5.3 million to 11,700 years ago). The genus name, which means "southern ape," refers to the first fossils unearthed in South Africa. "Lucy," a superbly preserved fossilized skeleton from Ethiopia dating approximately 3.2 million years ago, is perhaps the most renowned Australopithecus specimen.
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k to add notes
Political Conflict
In your own words, describe what an political
conflict might look like :
How can a political conflict lead to lasting issues
within a nation?
What issues might cause a political conflict?
Do you think that global governmental bodies
(think UN) are successful in stopping political
conflicts?
GIVING 20 POINTS!!!
According to Jeff Frieden of Harvard, those who want to change governments and society can use a political economy understanding as a potent tool.
What does "political economy" mean exactly?The word political economics is derived from the Greek words polis and oikonomos, which indicate "one who governs a home or estate," respectively. As a result, political economy can be defined as the study of how a nation—the household of the public—is run or governed, taking into consideration both political and economic factors.
Which three political economics types are there?There are three different political economies: capitalism, socialism, and communism. Contrary to capitalism, which is a kind of socialism, communism assigns ownership of resources to the state and society, respectively.
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time activity type of EM voice produced by
Time activity type of EM voice are waves that are created as a result of vibrations between an electric field and a magnetic field.
In plain terms, what is a magnetic field?The region surrounding a magnet that experiences the effects of magnetism is known as the magnetic field. When describing the distribution of the magnetic force within and around a magnetic object in nature, the magnetic field is a useful tool.
What elements comprise a magnetic field?Moving electric charges generate magnetic fields. Everything is constructed of atoms, and each atom has an orbiting nucleus that is composed of protons and neutrons. A weak magnetic field is produced around each atom because the orbiting electrons are tiny moving charges.
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What is the term
for forests found
in Brazil that are
flooded
seasonally?
A. rios
B. sierra
C. várzea
Answer:
C
Explanation:
The answer is vàrzea.
option C
A várzea forest is a seasonal floodplain forest found in the Amazon biome and swamped by whitewater rivers.
What happens to the varzea during the wet season?Large-scale seasonal flooding of places is caused by stream and river discharge along the Amazon River and several of its tributaries because of the substantial yearly rainfall that usually falls during a rainy season. As a result, the water level rises by 10-15 m (33–49 ft) and the waters become nutrient-rich. The upper Amazon's margins and its tributaries are included in the Iquitos Varzea Ecoregion. The Monte Alegre and Gurupa várzeas are located on the lower Amazon, the Purus várzea is in the center of the Amazon, and the Marajó várzea is near the mouth of the Amazon. Tidal and freshwater fluxes both have an impact on the Marajó várzea.
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The balance of energy in the solar interior means that
The balance of energy in the solar interior means that energy production rate in the core matches the rate of radiation escaping the Sun's surface.
The sun is essentially a gigantic fusion reaction, hence it has the ability to produce energy. The area between the sun's centre and around 20–25% of its radius is known as the core. Here, in the core, hydrogen atoms (H) are transformed into helium nuclei, which produces energy (He).
The intense temperature and pressure that present inside the core make this feasible. Within a radius of 24%, the sun produces 99% of its total energy. The energy that is transported from the solar core through the subsequent layers, finally reaching the solar photosphere, and departing into space as sunlight, heats the remainder of the sun.
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What factors are responsible for the variation in a population from one generation to the next?
Different phenotypes can be introduced into an organism by genetic changes that change gene activity or protein function. A trait is more likely to be passed down to the next generation if it is beneficial and assists the individual survive and reproduce.
What is population?In most cases, the word "population" refers to the number of people residing in a particular area, such as a city or town, area, country, continent, or the entire globe. Governments commonly conduct censuses to estimate the population size of the territory under their control. A census is a process for collecting, analyzing, summarizing, and publishing facts about a population. a population living in a particular area that is made up of members of the same species. The populations of a species can be relatively small and confined, like those on an island or in a valley, or they can be more widely dispersed and without a clear boundary separating it from another population of the same type nearby.
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Diffusion is a concept that explains how humans transfer ideas, features, or trends from one group and place to another. This includes agricultural practices.
In 1–2 sentences, describe some examples in which diffusion of agricultural practices has had a positive effect on humans or the environment.
In 1–2 sentences, describe some examples in which diffusion of agricultural practices has had a negative effect on humans or the environment.
In light of these benefits and risks, explain in 1–2 sentences how the diffusion of agricultural practices might be managed in the future to obtain the best results.
Diffusion of agricultural technology is the process that takes new technology from conception to farmer comprehension.
What is Diffusion ?"Technology pioneers" test it out, early adopters copy it, and eventually it is widely used. The cumulative adoption rate of technology, as demonstrated by numerous studies, follows a "S" curve over time.
Diffusion of culture is the spreading and blending of elements from other cultures. People love and take pleasure in the wide variety of foods, outfits, and even languages that are part of these various cultures.
Expansion diffusion occurs when ideas continue to thrive in their original settings while spreading to new regions. Islam, for instance, was born in the Middle East and has since spread around the world while maintaining a stronghold there.
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In what two 2 ways did railroads affect the economy?
Railroads had a huge impact on the economy in the 19th century. By providing efficient transportation of goods and people over long distances in a much shorter time, railroads opened up new markets, increased demand for goods and services, and created jobs. This increased economic activity and created new investment and trade opportunities. This, in turn, stimulated economic growth, increased the number of jobs available, and enabled the development of infrastructure.
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Types of Conflict
Economic
Political
Religious
Cultural
Giving 40 POINTS!!!
Answer:
Economic conflict is a conflict over economical issues. The most basic example would be a conflict over resources, and most of the wars throughout history have conformed to this model. One side attacks the other because it wants land, wealth or natural resources that belong to the other.
Social conflict is the struggle for agency or power in society. Social conflict occurs when two or more people oppose each other in social interaction, and each exerts social power with reciprocity in an effort to achieve incompatible goals but prevent the other from attaining their own.
Stathis Kalyvas identifies eleven types of political violence: Interstate war, Civil war, Terrorism, Political assassination, Military coup, Mass protest/Rebellion, Intercommunal violence, Organized crime/Cartels, Ethnic cleansing, Genocide, and State repression.
Hormby (2006) defines religious conflict as a situation in which religious adherents are involved in a serious disagreement or argument with one religious group and another. this is a situation in which there are opposition in ideas, opinions, feelings and wishes.
What are three types of religious conflict?
Inter-Religious Conflict.
Intra-Religious Conflict.
Sectarian Violence.
Example of religious conflict -
The Crusades, the many periods of persecution of Jews, religious conflicts between Catholics and Protestants in sixteenth- and seventeenth-century Europe, the execution of hundreds of Christians in seventeenth-century Japan, the Mormon expulsion from Missouri and Illinois in the 1840s, the Branch Davidian conflagration
A cultural conflict is a dislike, hostility, or struggle between communities who have different philosophies and ways of living, resulting in contradictory aspirations and behaviors. The notion originates from sociological conflict theories and anthropological concepts of intercultural relations.