Answer:
Model B
Explanation:
It let's more fluids flow through unlike Model A
Number 3 is the plants take in carbon dioxide and release oxygen so that we can breathe and the use the carbon
<span>Cells are difficult to see in light microscopy,so to help visualize the structure of cell ,dyes are used to impart a particular color to cells.
Eukaryotic cells have both acidic and basic components so,
Hematoxylin and Eosin staining is the standard method of staining used for an eukaryotic cell.
Hematoxylin is a basic dye that binds to negatively charged DNA and RNA and is blue in colour.Eosin is pink in color and it binds to positively charged particles like the mitochondria and other components of cytoplasm.</span>
Answer: A)Soil can only be formed by natural processes over hundreds or thousands of years.
Explanation: Soil can take 500 years or more for an inch of topsoil.
Animals take in this oxygen and release it as carbon dioxide. It is the process of respiration that helps the animals to survive. Actually the oxygen is transferred to the blood and the cells and then the carbon oxide is transferred from the blood and cells to the lungs for breathing out. Carbon dioxide is a waste material for our body. The build up of carbon dioxide in the body can be very fatal and lead to death of the animal. It is actually the reverse in case of plants. Plants take in carbon dioxide for making food by the process of photosynthesis and gives out oxygen. So it is a balancing act between animals and plants.