D. is your correct answer
Answer:
No 1 answer They require sophiscated tools. The microscopes help in the study of cells. The molecular study of the cells are performed by the help of electron microscope. So, we can say that cells are microscopic in nature.
Explanation:
No 2 answer The nucleus is the largest and most prominent of a cell's organelles (Figure 3.7). The nucleus is generally considered the control center of the cell because it stores all of the genetic instructions for manufacturing proteins.
No 3 answer Smaller single-celled organisms have a high surface area to volume ratio, which allows them to rely on oxygen and material diffusing into the cell (and wastes diffusing out) in order to survive. The higher the surface area to volume ratio they have, the more effective this process can be.
Answer: No
Explanation:
The american alligator are sighted in rivers and lakes and they are not native species as they do not live in New York City.
They are usually the pets that escaped from the owner and reached the lakes and river anyhow. They cannot sustain their life based on the number of individual that come to the lakes and rivers.
They do not affect the other species nearby them and because of these reasons they cannot be considered as ecological community.
I would say C if thats not right then its problable D
