During sexual reproduction, two gametes (sex cells) fuse to create a fertilized cell (zygote) with a complete set of chromosomes. What must be true about the number of chromosomes in each gamete

Answer: snails clams and squid have in common is MOLLUSKS

Explanation: MOLLUSKS an invertebrate of a large phylum which includes snails, slugs, mussels, and octopuses. They have a soft unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body. Along with the insects and vertebrates, mollusks are one of the most diverse groups in the animal kingdom, with nearly 100,000

The core of Darwin's thesis is that if three criteria are met, natural selection will take place. Factors: The battle for existence, variety, and inheritance is represented by the circumstances highlighted in bold above.

Most attributes are inherited, more offspring are generated than can survive, and offspring with more attractive traits will survive and have more offspring than those with less favorable traits. These three principles result in natural selection, which is an unavoidable process.

More environment-adapted organisms are more likely to survive and pass on the genes that contributed to their success. Over time, species change and diverge as a result of this process. One method of accounting is natural selection.

Learn more about natural selection Visit: brainly.com/question/23929271

#SPJ4

False. An emergent property of an ecosystem is a property that arises out of the interactions between the components of the system, and is not attributable to any one component.

Rather, the fall colors are a result of the deciduous trees shedding their leaves in preparation for the winter. This is a seasonal phenomenon which is not characteristic of the ecosystem itself, but rather the individual species which exist within it.

The autumnal changes observed in the leaves of the trees, and the resulting show of vibrant colors, is a result of the trees’ response to the changing environmental conditions. The trees are adapting to the decreasing levels of sunlight, temperatures, and moisture, which occur in the autumn months.

The emergent properties of an ecosystem are more subtle and complex than the seasonal changes in the trees’ leaves. Such properties are the result of the interactions between the various living and nonliving components of the system, and can be seen in the ways that species interact and change over time.

This could include the way that species evolve in response to changes in their environment, the way that certain species are able to dominate the environment, or the way that resources are used and exchanged between species.

Learn more about ecosystem at : https://brainly.com/question/13979184

#SPJ4

The sodium-potassium pump works against its concentration gradient. it pumps potassium ions out of the cell and sodium ions into the cell.

A sodium-potassium pump system moves sodium and potassium ions against a large concentration gradient. It transports two potassium ions into cells with high potassium levels and pumps three sodium ions out of the cell into the extracellular fluid. Sodium-potassium pumps are found in many cell (plasma) membranes. The ATP-powered pump moves sodium and potassium ions in opposite directions against their respective concentration gradients. In one cycle of the pump, 3 sodium ions are pushed out of the cell and 2 potassium ions are taken up by the cell.

Learn more about the sodium-potassium pump in

https://brainly.com/question/8507057

#SPJ4

Thickness of the ozone layer id not the one that disrupt and degrade freshwater systems.

The stratosphere, 15–40 km above the earth's surface, may include the ozone layer. Under typical pressure and temperature circumstances, the ozone layer in the stratosphere is between 2 and 5 mm thick, and the amount of ozone present varies by season, hour of the day, and location. Ozone builds up in the polar area due to poor photochemical depletion and ozone transfer from the equator. In the absence of other ozone-disturbing components, the highest ozone values are therefore observed over the Polar regions in winter. Wetlands are often referred to be areas of land that are either permanently saturated with moisture or immersed in shallow water.

Learn more about freshwater system at

https://brainly.com/question/14805117?referrer=searchResults

#SPJ4

The elements of human nature that are explained by the world on the turtle's back are good vs evil and right vs wrong.

A creation story from the Iroquois people is known as The World on a Turtle's Back. The biblical view of creation is connected to this worldview. Both depict a woman who wants to eat the forbidden fruit. As soon as they consume this evil fruit, both good and bad are born.

Good vs evil, justice versus wrong, and good versus bad were the natural elements that were discussed. This is demonstrated by the conflict between the opposing pairs and how they counterbalance one another.

You can also learn about Turtle's Back from the following question:

https://brainly.com/question/28222829

#SPJ4

The sympathetic trunks are located immediately lateral to the vertebral bodies of the vertebral column.

Sympathetic trunks are two ganglionated nerve trunks that form the bundle of nerve fibers paired together and run from the base of the skull to the coccyx.

This sympathetic trunk lies just lateral to the vertebral bodies for the entire length of the vertebral column.

Sympathetic trunks are a fundamental part of the sympathetic nervous system while also being a part of the autonomic nervous system. They allow both superior and inferior nerve fibers to travel to the spinal cord to commence the regulatory actions in the body.

To know more about the sympathetic trunk visit at:

https://brainly.com/question/29495438

#SPJ4

Based upon the data provided, temperature and direction of wind determine the weather forecast.

Los Angeles experiences the highest temperature, 56 degrees Fahrenheit, and the lowest temperature, 47 degrees Fahrenheit, with a southwesterly wind. The highest temperature in Salt Lake City is 42 degrees Fahrenheit, while the lowest temperature is 36 degrees.

The wind is blowing from the west. The wind is blowing toward the Midwest and Chicago II has a maximum temperature of 28 and a minimum temperature of 27 degrees Fahrenheit. The hottest and lowest temperatures in Philadelphia are both 56 degrees Fahrenheit, and the wind is blowing northeast. The wind blows southward in New Orleans, where the highest temperature is 75 degrees and the lowest is 70.

To know more about weather forecast, refer to the following link:

https://brainly.com/question/24198130

#SPJ4

The biotic factors of the terrestrial ecosystems are trees, fungi and birds while the abiotic factors are the sunlight and soil.

A terrestrial ecosystem is the type of ecosystem that is found in the earth environment which is made up of both the biotic and abiotic factors.

The biotic factors are those factors that are considered as the living things such as the trees, fungi and birds while the abiotic factors are the non living things found in the ecosystem and they are soil and sunlight.

Learn more about ecosystem here;

https://brainly.com/question/27254748

#SPJ1

Answer:

Explanation:

With the arrival of warm summer weather, states have started to relax their COVID-19 stay-at-home orders. Excited to spend time with family and friends, people are now planning vacations, with one destination remaining a popular choice for many: the beach. However, extra time spent soaking up the sun increases our exposure to harmful ultraviolet (UV) radiation and raises our risk for developing skin cancer.

July is UV Safety Month. We know that one of the best ways to practice UV safety is to wear sunscreen every day. To help you choose and correctly use the best product for your needs, review the nine facts about sunscreen listed below.

Fact #1: Broad Spectrum Sunscreens are Best

UV radiation from the sun includes two types of harmful rays:

Ultraviolet A (UVA) Rays: Most common; cause premature aging of the skin (e.g., wrinkles)

Ultraviolet B (UVB) Rays: Most dangerous; cause sunburns

Overexposure to both types of rays can cause skin cancer. Sunscreens labeled as “broad spectrum” help protect against the effects of both UVA and UVB rays.

Fact #2: Aim for a Sunscreen with at Least 30 SPF

A sunscreen’s sun protection factor (SPF) indicates how much protection the product offers against UV radiation. Sunscreens with an SPF of at least 30 block 97 percent of the sun’s rays.

Fact #3: No Sunscreen is Waterproof or Sweat Proof

Manufacturers can no longer advertise sunscreens as waterproof or sweat proof. Instead, products are now labeled:

Water Resistant: Effective for up to 40 minutes in water

Very Water Resistant: Effective for up to 80 minutes in water

The AAD recommends reapplying sunscreen every two hours, after getting out of the water, or after sweating.

Fact #4: Children Under Six (6) Months Typically Should Not Wear Sunscreen

Infant skin is more sensitive than adult skin. To protect infants younger than six months, the AAD recommends keeping them in the shade as much as possible; dressing them in protective clothing, such as long-sleeved shirts, pants, and a wide-brimmed hat; and making sure they stay hydrated. If you are still concerned about sun exposure, ask your pediatrician if he/she recommends sunscreen.

Fact #5: Sunscreen is Only One Tool in Your UV Safety Toolbox

There are many ways to reduce your exposure to UV radiation. Experts recommend combining sunscreen use with wearing protective clothing, staying in the shade when possible, and avoiding outdoor activities when the sun is most intense.

Fact #6: Use “Teaspoon and Shot Glass Rule” to Determine How Much Sunscreen to Apply

Many people do not apply enough screen. The “Teaspoon and Shot Glass Rule” recommends using one teaspoon of sunscreen to cover the face and neck, and enough sunscreen to fill a shot glass — approximately one ounce — to cover all other exposed areas on the body.

Fact #7: Sunscreen Expires

According to the AAD, the FDA requires all sunscreens to retain their original strength for at least three years. Many sunscreens include an expiration date printed on the label. Visible changes in color or consistency can also indicate that it is time to dispose of the product.

Fact #8: Spray-On Sunscreens Are Convenient, But Not Always Effective

The AAD explains that current FDA regulations on testing and standardization do not apply to spray-on sunscreens. Individuals who want to use spray-on sunscreen should make sure to use an adequate amount, rubbing it in to thoroughly cover all areas of exposed skin.

Fact #9: Sunscreen is Safe to Use

Some recent news stories have called into question the safety of the ingredients used in sunscreens, but sunscreen remains completely safe to use and is recommended by all health care professionals. Read more about this in our blog post titled “Is Sunscreen Safe?”

Learn More: How NFCR is Advancing Skin Cancer Treatment

Research conducted by the National Foundation for Cancer Research’s (NFCR) scientists Danny R. Welch, PhD; Paul Fisher, MPh, PhD; Web Cavenee, PhD; and Helmut Sies, M.D., continues to play a critical role in our understanding of this complex disease, including potential advances in treatments for melanoma — the most dangerous type of skin cancer.

To learn more about skin cancer research supported by NFCR, please visit our Skin Cancer webpage.

The stomach is the only part of the alimentary canal with three muscular layers. The stomach need three layers of muscle for digestion through peristalsis.

The stomach is a part of the body that includes the entire abdominal cavity which consists of the digestive tract and accessory organs, the urinary system, and the spleen. There are three layers of muscles in the stomach, namely the outer longitudinal muscles, the middle circular muscles, and the inner oblique muscles which help in peristaltic events.

Peristalsis is a movement in the form of muscle contractions in the digestive tract that pushes and stirs food so that it is digested. Through peristalsis the stomach will break down food and absorb nutrients during the digestive process.

Learn more about peristalsis at:

https://brainly.com/question/22350049

#SPJ4

Vegetarians make sure they get enough protein by adding Beans and lentils ,Soy products ,Whole grains, Nuts and seeds in their daily meals .

Protein is one of the most essential nutrients for daily life , as they are required to help your body repair cells and make new ones. Protein also plays crucial role in growth and development in children and expecting mothers .

In general , proteins are required for the repairing and building your body's tissues, They also allows metabolic reactions to occurs at place for easy body function . so we can say that protein is crucial for maintaining structural framework of body and also helps in maintaining fluid balance .

To learn more about Protein , here

brainly.com/question/29776206

#SPJ4

Surgery, physiotherapy, psychotherapy, and radiation therapy are just some of the options available for treating chronic diseases.

In most cases, chronic diseases can be managed, but not cured, over the long term. In addition to dealing with acute health problems and complications that can shorten life expectancy, people with chronic illnesses frequently deal with daily symptom management that negatively impacts their quality of life.

Medication, however, is a common treatment option. Medication costs are a major part of health care spending in Australia and other developed countries, accounting for 13% of the total in 200607.4 In 2008, 4 billion prescriptions were filled, and many of these were for long-term conditions. Prevention and management of chronic diseases, especially when multiple medications are required, can be taxing.

Want to know more about chronic diseases visit the link which is given below;

https://brainly.com/question/28420811

#SPJ4

The correct answer would be inner planets, Terrestrial planets is another name for the inner planets.

There are a total of eight planets in our solar system. The outer planets and the inner planets are two other major groups into which planets can be divided. Earth, Mercury, and Mars are considered inner planets since they are situated within the asteroid belt (region of asteroids between Mars and Jupiter). Furthermore, because they are made of minerals and metals, inner planets differ from other planets in terms of their composition. These planets are also referred to as terrestrial planets because of their makeup.

To know more about terrestrial planets, check out:

https://brainly.com/question/17225178

#SPJ1

Answer:

ultrafiltration

Explanation:

the water and solutes pass through the glomerulus or filtration membrane inorder to be filtered

Answer:

The sunlight is converted to chemical energy.

Explanation:

Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.

In a global convection cell the correct option is (C). Cool air and warm air repeatedly collide, pushing air up and causing storms.

In a convection cell, the alterations are profound. The air molecules start to move and vibrate as the air at the cell's base heats. As a result, they start to spread out and collide, which reduces the density of the air parcel.

Convection is a pattern that occurs on a large scale. On a smaller scale, it also takes place within certain storms. However, because to Earth's rotation, the air that travels north and south from the equator likewise revolves with the Earth. Northbound air makes a right turn. Southbound air turns to the left.

Less dense air rises and moves away from the equator in a global convection cell. And the dense air from the pole flows backwards toward the equator as it descends. The poles can be thought of as the longitudinal edges of the earth's sphere, with the equator acting as its centee. The Coriolis Effect, a result of the spinning of the Earth, also aids in this airflow.

To know more about global convection

https://brainly.com/question/9588482

#SPJ4

All tall will be the expected outcome for the F1 generation. To create the P generation, Mendel crossed two pure breeding parents. A tall plant and a short plant have been crossed. In the first generation following the cross, one version of a trait.

Such as tall, always concealed the other form, such as short. Mendel referred to the dominant trait as being visible, and the recessive trait as being concealed. The buried version of the trait resurfaced in a small percentage of the plants in the second generation when plants were permitted parents to self-fertilize (pollinate themselves). The ratio was specifically 3:13:13, colon, 1, meaning that there were always roughly 333 plants that displayed the dominant characteristic (for example, tall) for every 111 plants that displayed the recessive trait.

To learn more about generation, click here.

https://brainly.com/question/10736907

#SPJ4

In 1953, James Watson and Francis Crick proposed the double helix model of DNA, which revolutionized the field of genetics. The discovery of the structure of DNA was a monumental achievement, it  was important breakthrough in establishing DNA as the molecule of heredity.

In 1935, American microbiologist Wendell Stanley demonstrated that a virus is composed of proteins and nucleic acids, proving that viruses are complex, living organisms. Stanley also identified and labeled the proteins and nucleic acids of the virus he was studying, which allowed him to conclude that the nucleus of this virus was composed of DNA. This was the first time that a scientist had identified and labeled the DNA and proteins of a virus, and it demonstrated that DNA is the molecule of heredity.

In the 1940s, American virologist Alfred Hershey and Canadian biologist Martha Chase conducted a series of experiments to study the composition of viruses. They used a radioactive isotope of phosphorus to label the proteins of a virus, and a radioactive isotope of sulfur to label the DNA. By doing this, they were able to prove that the DNA of the virus was the molecule responsible for heredity. This was the first time that scientists had labeled the DNA and proteins of a virus to demonstrate that DNA is the molecule of heredity.

Learn more about double helix model at :https://brainly.com/question/2920404

#SPJ4

The expected ratio of normal to affected children will depend on the genetic background of the parents. If both parents have achondroplasia, which is a dominant gene, then each of their children has a 50% chance of inheriting the condition.

In this case, the expected ratio of normal to affected children would be 1:1. However, if one parent is heterozygous (carries one copy of the gene) and the other is homozygous (carries two copies of the gene), then the expected ratio of normal to affected children would be 3:1.

This is because the heterozygous parent has a 50% chance of passing on the achondroplasia gene and the homozygous parent has a 100% chance of passing on the achondroplasia gene.

To learn more about homozygous visit:

https://brainly.com/question/10418216

#SPJ4

Answer:

He will have a decreased amount of testosterone and in turn a reduction in sperm production.

Answer:

What are 5 major environmental problems suggest ways to protect the environment?

Biodiversity. Biodiversity is the most complex and vital feature of our planet. …

Water. Water pollution is a huge concern for us and our environment. …

Deforestation. We need plants and trees to survive. …

Pollution. …

Climate Change.

Explanation:

After the cyanide poisoning the proton gradient will be reduced. Moreover, it will lead to the stopping of the electron transport chain (ETC). Because it prevents the complex IV from transporting electrons, cyanide functions as a poison.

Most of the electron transport chain will abruptly slow down and cease if complex IV cannot transmit electrons. Protons won't be pumped out of the matrix and into the intermembrane space if electrons aren't traveling along the transport chain. The gradient will deteriorate as the protons already in the intermembrane space move down their gradient and into the matrix because they won't be replaced. Thus, this will cause the intermembrane space's pH to decrease.

To know more about ETC please visit

https://brainly.com/question/24372542

#SPJ4

The circulatory system works with the respiratory system to circulate blood and oxygen throughout the body.

The cardiovascular system (also called the circulatory system) transports blood from the heart to the lungs, where it is oxygenated. After receiving oxygen, blood is pumped out of the heart and into the body's arteries. Veins return blood that is low on oxygen to the heart, where the pumping process can begin again. Your body's organs, muscles, and tissues can't function properly without a strong circulatory system. The job of the circulatory system is to transport blood all over the body. The body's organs, muscles, and tissues would not function to keep you alive if the blood didn't circulate through them.

Getting rid of waste is another function of the circulatory system. Examples of such trash are:

Oxygen used in respiration produces carbon dioxide.

Excretions and waste products from your body's systems.

Food and drink scraps are waste products.

Want to know more about the respiratory system visit the link which is given below;

https://brainly.com/question/4190530

#SPJ4

In the United States, industrialized food production requires approximately 10 units of nonrenewable fossil fuel energy to produce 1 unit of energy put on the table.

This is because industrialized food production involves the use of heavy machinery, transportation of food from the farm to the distribution center, and the use of fertilizers, pesticides, and other chemicals to produce crops. All of these activities require energy which is typically sourced from nonrenewable fossil fuel sources.

Additionally, food production also requires energy for processing and packaging, which further increases the amount of energy required to produce 1 unit of energy put on the table. In conclusion, industrialized food production requires approximately 10 units of nonrenewable fossil fuel energy for every 1 unit of energy put on the table in the United States.

To learn more about pesticides visit:

https://https://brainly.com/question/24316938

#SPJ4

Snail is considered as an animal as insects strictly belong to the pylum Arthropoda.

Snails are the animals of the phylum Mollusca. They belong to the class Gastropoda and are recognized by the presence of the spiral shaped shell on the upper side of the body. Snails can be present on land or even in water. It moves y the help of a single muscle like foot.

Arthropoda is the largest phylum of the Animal kingdom that possesses the invertebrate organisms. The characteristic features of the organisms of this phylum is presence of exoskeleton, segments in the body and paired appendages. The organisms of Arthropoda are referred to as insects.

To know more about snails, here

brainly.com/question/3415302

#SPJ4

The genotypes of the offspring must be readily determined from their phenotypes.  

A heterozygous individual has two different alleles. Therefore it would have the genotype Aa. An individual with the genotype Aa can make two types of gametes: A and a. Since this is a random process, the individual will, on average, make equal numbers of each gamete.

A genotype is a scoring of the type of variant present at a given location (i.e., a locus) in the genome. It can be represented by symbols. For example, BB, Bb, bb could be used to represent a given variant in a gene.

To know more about genotype visit

https://brainly.com/question/12116830

#SPJ4

The expression of one or more genes can be regulated by regulatory regions, as is well known.

The findings confirm the theory that the deficiency in the afflicted kid is caused by the regulatory DNA, which will not remodel, according to the data in the table.

Inheriting qualities from one generation to the next is made possible by genes, which are a component of DNA.

Gene regulation, the earliest genetic regulatory system, was first clearly shown in the Lac gene (operon), a basic unit of DNA.

The lac gene is necessary for the "breakdown of lactose" and aids in its for the transportation.

For more question on regulatory DNA.

https://brainly.com/question/13924174

#SPJ4

Note : The table sequence of above question is attached bellow,

The second and last step of photosynthesis is the process that is not dependent on light are light-independent reactions. It creates organic materials for the plant .

The photochemical process of photosynthesis involves a number of light-independent biochemical events light-independent reactions that result in plant the formation of organic compounds from carbon dioxide. This metabolic pathway is propelled by the energy released from the ATP created during the light reactions. Photosystems I and II, which are both found in the thylakoid membranes of chloroplasts, are plant responsible for using light energy. The light-independent reactions ,chemical energy obtained during the light-dependent processes is used to construct carbohydrate molecules from plant carbon dioxide in light-independent reactions (the Calvin cycle).

learn more about light-independent reactions here:

https://brainly.com/question/3505937

#SPJ4

Im guessing any is fine, as long as its acceptable.

"What are the benefits and potential risks of using hot and cold compresses, and when is it appropriate to use each type?"