Two factors that influence succession are inhibition, in which one organism slows the growth of another, and facilitation, in which one organism aids the
growth of another. In the diagram, there are few grasses in softwood and
hardwood forests. How did these trees cause inhibition of grass growth?
A. O By limiting the amount of sunlight that reaches the ground
B. O By limiting the amount of water that reaches the ground
C.
By removing all of the nutrients from the soil
D. By removing all of the carbon dioxide from the air