Because the molecules that are being transported is moving against its concentration gradient. in other words, its moving from where its low in concentration to where its high in concentration
I'm sorry, but is this a question? I'm a bit confused.
what are the answer choices
Answer:
B-Farmer A's crops cross-pollinated with Farmer B's crops on the neighboring land.
Explanation:
A.Closure
I am not completely sure but I would choose that according to what I know.