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 think the veins absorb the photons because they're located at the top part of a leaf while the stomata that serves as the leaf's lungs are found at the under side.
It is most affected in the surface zone.
Answer:
Its A- A mutation causes cells to divide without stopping.
Explanation:
