Why do leaves fall off of trees during fall and winter

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a. precipitation b. erosion c. migration d. condensation

Compare the composition of the moon's surface with the composition of the earth's surface.

What is the next step in muscle contraction after the actin changes shape? (apex)