Answer:
the clear plastic bag is used for the sunlight penetration to allow photosynthesis to take place (i guess this is the answer I'm not sure tho but think about it) Black plastic bag would prevent the light penetration
When observing a specimen under medium power, which adjustment knob should be used to focus the image? Why?
Answer:
The coarse adjustment knob should only be used with the lowest power objective lens. Once it is in focus, you will only need to use the fine focus. Using the coarse focus with higher lenses may result in crashing the lens into the slide.
Explanation:
2. THE DEPRESSION THAT RESULTS WHEN A VOLCANIC CONE COLLASPES OVER AN EMPTYING
WALEN
MAGMA CHAMBER IS A
Answer: A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully. When the magma chamber empties, the support that the magma had provided inside the chamber disappears.
Explanation:
Which of the following is true about the structure of water?
1. It is held together by an ionic bond
2. It is nonpolar
3. It is polar
4. It has one positive hydrogen attached to one negative oxygen
Answer:
3.) It is polar
Explanation:
Water is polar covalently bonded within the molecule. This unequal sharing of the electrons results in a slightly positive and a slightly negative side of the molecule. Other molecules, such as Ethane, are nonpolar, having neither a positive nor a negative side.
1)What is a trophic level?
2) explain how energy travels through food web ? your response must include the following terms:
Decomposer,producer, primary, consumer , 10%.
3)why is energy reduced at successive trophic levels?
1. The trophic level is something's position in the food chain/food web.
2. Energy travels through out the food chain because all the animals eat each other and take each other's energy. The decomposers are eaten, the producers are eaten, but the primary consumers get all the energy.
3. The energy decreases because each animal decomposes the energy a little, before getting eaten. By the time the food reaches the top of the web, the energy is barely left.
Hope this helps!
How does high specific heat help aquatic organisms?
Answer:
Explanation:
Due to its high heat capacity, water is used by warm blooded animals to more evenly disperse heat in their bodies; it acts in a similar manner to a car's cooling system, transporting heat from warm places to cool places, causing the body to maintain a more even temperature.
Describe a situation in which being able to drink milk would give an individual an advantage with respect to survival and reproduction.
Answer/Explanation:
A family has a farm in which they grow crops and keep cows. During a particularly harsh winter, the crops failed to grow as well as they normally do. This means that their food supply was limited.
However, they also have cows, and cows produce milk. If this family were able to drink milk, they could get some nutrition from the milk. This means they are less likely to succumb to malnutrition and disease, and are more likely to survive and reproduce.
 which statement is true about cell wall but not a cell membrane?
a. it forms the outer layer of the cell
b. it gives an animal cell shape
c. it is selectively permeable
d. it is mostly of cellulose
Can someone please answer these 3 questions pls.
Matthias Schleiden proposed that a plant grows by the division of cells and is composed entirely of cells. Which component of the cell theory is supported by Schleiden’s contribution?
The activity of an organism depends on the energy it consumes.
The activity of an organism depends on the energy it consumes.
All living organisms are made up of one or many cells.
All living organisms are made up of one or many cells.
All cells are physically and chemically similar.
All cells are physically and chemically similar.
Energy flow occurs within cells.
Answer: All living organisms are made up of one or many cells.
Explanation:
In 1830s, botanist Matthias Schleiden studied the tissues individually and proposed the cell theory for the first time. According to him all the living beings are made up of cells and cell is the basic unit of life.
As according to him in the cell division he was able to observe that the plants are made up of cells. This observation is indicating towards the fact that all living organisms are made up of one or many cells.
A tactic used long ago by conquering nations on those they sought to control was to
invade the land and salt the fields. What were they hoping to accomplish by doing
this?
Answer:
I don't know this answer sorry dear
Explanation:
hope other wilp help you soon
The invading nations aimed to devastate the agricultural productivity and food supply of the local population.
Salting the fields was a deliberate act of agricultural sabotage with long-lasting consequences. The process involved spreading large amounts of salt over the farmland, which effectively rendered the soil infertile, inhibiting the growth of crops and making it nearly impossible to cultivate food. This strategy was particularly effective in ancient times when agriculture was the primary means of subsistence.
The devastation caused by salting the fields not only impacted the present generation but also affected future generations as the soil remained barren and required significant efforts to be reclaimed for agricultural use. This tactic was not only meant to suppress immediate resistance but also to instill fear and discourage other potential adversaries from rebelling against the invading nation.
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ASAP PLEASE!
What substances are used up as the reactants in cellular respiration?
O2 and C6H12O6
O2 and H2O
CO2 and H20
CO2 and C6H12O6
Answer:
Cellular Respiration reactants are glucose and oxygen.
Explanation:
__ used to help substances enter or exit the cell membrane
Answer:
Transport Protein
Explanation:
This is used to help substances enter or exit the cell membrane.
After a virus uses a host cell, the host cell often
is damaged or destroyed
develops a capsid
is no different than before
is refreshed and healthy
Answer: is damaged or destroyed
Explanation:
Nitrogen is included in the
makeup of proteins and
nucleic acids. Also, it is often
the limiting nutrient for what
type of organism?
HELP HELP!!! ASAAAAPPPPP
Answer:
a is your answer
Explanation:
1. The human body maintains a constant internal temperature of 98.2F - 98.8F What changes occur
when the hypothalamus detects a temperature of 95F? Is this a negative or positive feedback?
Body temperature is regulated by negative feedback. The stimulus is when the body temperature exceeds 37 degrees Celsius, the sensors are the nerve cells with endings in the skin and brain, the control is the temperature regulatory center in the brain, and the effector is the sweat glands throughout the body.
Which of the following statements correctly describes the relationship between energy and nutrients in an ecosystem?
a. Energy and nutrients flow
b. Energy and nutrients cycle
c. Energy flows and nutrients cycle
d. Energy cycles and nutrients flow
Which types of rocks can become metamorphic rock?
both igneous and metamorphic rock
both igneous and sedimentary rock
clastic sedimentary rock
clastic or chemical sedimentary rock
Answer: Your answer is ''Both igneous and sedimentary rock.''
Explanation: They both can form underground and at the surface.
Answer:
B
Explanation:
HELP PLS HURRY i really i need this done
What is a big difference between to
biosphere and the geosphere?
______is the international system of units used by scientists worldwide.
Which of the following is NOT a characteristic of life?
A must have a method of excreting waste
B Must be able to grow
C Must maintain boundaries between inside and outside
D Must use oxygen to survive
Answer:
B
Explanation:
You can't tell anybody to grow because you are amazing
whatever size or way you are so B
Geckos are a type of small lizard that live in tropical areas. Geckos are often eaten by birds, snakes and larger lizards so they need to blend into their surroundings. In one area, scientists had always found brown and green geckos that blended in with the grass and the leaves on the ground. Over time, though they found yellow geckos in the same population. Three students were talking about why there were yellow geckos. Ciena thought that the change came from a mutation in the population. Tibor thought the change came from the environment. Sasha though that Ciena and Tibor were both right. Who do you agree with and why do you think that?
Answer:
Not going to say this is right but, I think that Tibor is correct because if the land has changed more over time then the yellow ones have adapted to the new living conditions while the green one have found ways to live in that environment.
need help
6H2O + 6CO2
C6H12O6 + 602
Answer:
C6H12O6+6O2=6CO2+6H2O
Which of the following is important in creating a genetically diverse population?
Answer:
What are the choices so that i can answer the question
You would need to combine the genes from 2 different populations. Since lowering the diversity of a population with cause there to be no variation. Which means that then the population cannot evolve in different ways such as to changing environmental factors and can face an extreme risk of extinction. I hope this helped!
An astronaut leaves Earth's surface and begins orbiting Earth. How will his departure from Earth affect his mass and weight?
A:His mass and weight will remain constant.
B:His mass will increase; his weight will decrease.
C:His mass will decrease; his weight will increase.
D:His mass will remain constant; his weight will decrease.
His departure from Earth will affect his mass and weight by the mass
remaining constant and his weight decreasing.
Gravitational force is present on earth's surface and is responsible for
pulling bodies towards each other. It is also responsible for objects falling to
the ground thereby making them remain there.
Weight is calculated by mass multiplied with gravitational force. The
gravitational force on a body decreases with increase in altitude which is
why mass remains constant and his weight decreases.
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asap!!! A researcher illuminated a filament of cyanobacteria with light that passed through a prism, thus exposing different segments of cyanobacteria to different wavelengths of light. He found that the bacteria in the green light changed in color from green to red after multiple weeks of exposure but were still reproducing at the same rate. What can you conclude about the change in pigmentation of the cyanobacteria exposed to green light?
1.) More chlorophyll a was produced in response to the green light exposure
2.) The cyanobacteria were dying and were changing color in response
3.) Red light instead of green light was being absorbed by the chloroplasts
4.) More red photosynthesis pigments were produced to absorb green light
Answer:
#4.. More red photosynthesis pigments were produced to absorb green light
Chlorophyll, carotenoids, and phycobiliproteins, as well as additional classes like scytonemin, which are more focused on cyanobacterial cells' protection, are the three main classes of photosynthetic pigments that stand out in cyanobacteria. Thus, option D is correct.
What are the characteristics of cyanobacteria?Many plants depend on cyanobacteria for their wellbeing and development.
Being able to transform inert atmospheric nitrogen into an organic form, like nitrate or ammonia, makes them one of the very few types of organisms that can do so.
Cyanobacteria are microscopic, photosynthetic organisms that are classified as bacteria.
They were once known as blue-green algae. Since dense growths frequently color water green, blue-green, or brownish-green, they were previously referred to as blue-green algae.
Therefore, More red photosynthesis pigments were produced to absorb green light.
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Energy can be measured in calories, 1,000 calories is called a kilocalorie (kcal),
If the producers have 10,000 kcal of energy and 10% is transferred to the primary
consumers, how much energy is transferred?
100 kcal
1,000 kcal
10 kcal
Plz help me which one is it!!!!!
Answer: 1,000kcal
10% of 10,000 is 1,000.
The amount of energy transferred if 10% is transferred to the primary consumers is 1000kcal
Given the following parameters
Amount of kcal the producer have = 10,000kCal
Percentage transferred to the primary consumers = 10% of the amount produced
Get the amount of energy transferred;
[tex]Energy \ transferred = \frac{10}{100} \times 10,000\\ Energy \ transferred =0.1 \times 10,000\\Energy \ transferred =\frac{10,000}{10}\\Energy \ transferred =1000kcal[/tex]
Hence the amount of energy transferred if 10% is transferred to the primary consumers is 1000kcal.
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Complete the statement to describe the sodium-potassium pump.
The sodium-potassium pump moves____
ions into the cell and____
ions out of the cell.
Answer:
The sodium-potassium pump moves potassium
ions into the cell and sodium
ions out of the cell.
Explanation:
Answer:
The sodium-potassium pump moves potassium
ions into the cell and sodium
ions out of the cell.
Explanation:
i got it right on edge
which of the following would be a quantitative observation
a. the attractiveness of the tail feathers of a male peacock is compared
b. butterfly wings are assessed to see which is the most orange in appearance
c. the height of radish seedlings is measured
d. the odor of different plants is compared to see which smells the worst
Answer:
c. the height of radish seedlings is measured
Explanation:
Quantitative measurements revolve around the quantity of things and exact measurements. The measured height of a radish seedling is the perfect example of that.
Memory technique:
Quantitative observations involve quantity (numbers).Qualitative observations involve quality (descriptions, features, i.e. color, smell, shape)