Multiple Choice
Elephants on Africa's Serengeti plains eat small trees, such as acacia, by knocking them over and uprooting them.This behavior keeps the region a grassland rather than a forest or woodland.The grassland sustains large grazers such as antelopes, wildebeests, and zebras, and small mice and shrews.These in turn feed predators such as lions and hyenas.Because of their position in this ecosystem, elephants can be considered a(n)
A) top predator.
B) keystone species.
C) foundation species.
D) autotroph.
E) exotic species.
Correct Answer:

Verified
Correct Answer:
Verified
Q206: Which factor would scientists consider evidence that
Q207: Refer to the graphs. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5650/.jpg" alt="Refer
Q208: Twenty percent of all humans depend on
Q209: Refer to the figure. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5650/.jpg" alt="Refer
Q210: Refer to the table. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5650/.jpg" alt="Refer
Q212: Unusually warm waters in the Caribbean caused
Q213: Possible changes in species as a result
Q214: A semitropical coastal region is undergoing development,
Q215: Australia's Lord Howe Island stick insect was
Q216: Which of these would not be considered