Stem cells can make many copies of themselves through the process of . This process results in daughter cells that are the parent cells. The unspecialized cells can become specialized through the process of .

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

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.

Which of the following is a common response to cell signaling?