Compare and contrast the tundra and the desert. How
are they similar and how are they different?

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

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.