The answer would be light. Light is needed in plants so that they can do the process of photosynthesis.
First! Ask yourself... who, what, when, where
Answer:
d
Explanation:
because when you plough your field for crops to grow rain falls for the crops to yeild well
Active transport is the process that would be used to transport calcium ions through the calcium pump.
An animal cell will only have a cell membrane, a plant cell will have a cell membrane and a cell wall