Which of the following changes in deciduous forests occurs in the spring?
a.
trees regain their leaves.
b.
trees block the flow of water and nutrients to their leaves.
c.
the leaves of trees begin to lose their chlorophyll.
d.
trees live off of stored nutrients.

In a deciduous forest, in autumn/fall the leaves become drier and then eventually fall from the trees.

During the winter, the tree is living off reserves and tries to minimize it's function.

During the spring - and this is what the question is asking for - the leaves re-grow. The correct answer is therefore a. -Trees regain their leaves.

We can plant more trees and plants.

Ten percent of energy is transferred from sun to the level indicated.