Summarize how c-14 and u-238 can be used to determine fossil ages.

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.

Identify the examples in which sam interacts only with natural resources

What best describes the dropping height of a ball that bounces back up to a height of 45 cm