Answer:
It would be the plant type
Explanation:
This is because you are measuring the growth of 2 different plants, so they can not be the same. all the other options ARE constants
I believe it is Nerve Cells
Correct me if I'm wrong.
Answer:
In science, this is false. Powers of ten are the references to either scientific notations or measurements when comparing atoms in chemistry.
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product.