Which is the BEST example of a community responding to an external factor? A. Plants and animals thrive on the forest floor after the fall of a white pine causes an opening in the canopy.
O
B. Many species of raptors fly alongside each other during the autumn migration to warmer climates.
O C. Elephants use their tusks to dig the salt needed in their diets from the wall of a cave.
O D. Adult musk oxen in a herd surround their young to protect them from wolves.