explain how regulation of expression allows a cell to efficiently use its energy supply to carry out specific metabolic reactions that are necessary at specific times

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

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 difference between a meteoroid and a meteor?