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.

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?