True or false: Guard cells close openings in the leaves slowing down water loss.

Why do german shepherds shed so much

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination