At a divergent plate boundary of two oceanic plates, what is the most likely to form? HELP ON TEST!! a) folded and faulted mountains
b) a rift valley
c) volcanic mountain ridges
d) earthquakes

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.

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.