Automatically region nervous system
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.
Explanation:
1) - C) Algae growing on the glass
2) - A) Bacteria that lives in the intestine of a rabbit
3) - D) All the gray squirrels that live in a forest
4) - D) Density
Hope this helps!
