Multiple Choice
It is difficult to estimate current rates of extinction because:
A) many "extinct" species may still be represented by isolated populations.
B) extinction is very rare.
C) new species are evolving as fast as species are becoming extinct.
D) the number of species is unknown; many remain undescribed to science.
E) most species in danger of extinction are microscopic.
Correct Answer:
Verified
Correct Answer:
Verified
Q32: What causes mass extinctions?
Q55: Overexploitation is a problem for more than
Q56: Trees alter runoff patterns, causing increased erosion
Q57: The term _ describes the variety of
Q61: Native Americans developed an agricultural method using
Q62: Habitat fragmentation increases the breeding success of
Q63: The mass extinction currently taking place is
Q64: The 1993 flooding along the Missouri River
Q76: The _of the planet is the area
Q85: How can sustainable fishing be accomplished?