Movement across the cell membrane that does nnot require energy is called

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

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.

Witch theory suggests all living things are made up of cell or cells