The cheetah is the only mammal in the world that . A) threatens the nature
B) is in danger of extinction
C) no other animals can reach its speed
D). has a speed reaching more than 70 miles per hour
E) is thought to give harm to agricultural expansion
56. The cheetah is threatened by extinction because . A) of its speed
B) they are experiencing a sudden decline in number
C) of reproductive problems
D) they live in captivity
E) of lack of genetic differentiation and agricultural growth
57.
Reproductive problems illustrate . A) that cheetahs don't have a variation in their genetic structure
B) that the amount of infant mortality is excessive
C) cheetah is threatened by extinction
D) cheetah's vulnerability to disease
E) loss of their natural habitat leads them to extinction
