Multiple Choice
What can conservation biologists say with certainty about the causes of the extinction of species?
A) Extinction is caused only by human activities.
B) Extinction is caused only by natural events.
C) Extinction is caused by both human activity and natural events.
D) Extinction is probably caused by many factors, most currently unknown.
E) Extinction is balanced by speciation, so there is no net extinction.
Correct Answer:
Verified
Correct Answer:
Verified
Q24: Polar bears hunt seals by traveling over
Q25: All members of a rare cycad (ancient
Q26: Decades ago, a coastal wetland was drained,
Q27: An industry releases toxic chemicals into a
Q28: Refer to the graph. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5650/.jpg" alt="Refer
Q30: An invasive species might have any of
Q31: Climate researchers have found that biomes are
Q32: Burmese pythons are among the world's largest
Q33: Human intervention to restore degraded ecosystems is
Q34: Scientists describe the recent decline in global