How does what us found on the tiolet handle and water fountain handle compare, before and after being cleaned with sanitizer?

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 percentage of light hits earth's surface directly?

What was darwins theory of common decent