Multiple Choice
Paleontologists estimate that ________________.
A) 99% of all species that have ever existed are now extinct
B) more than 99% of all species alive today have been discovered and described
C) extinction is tied exclusively to human activities
D) more species are alive today than ever before
E) biodiversity is evenly spread over the earth's biomes
Correct Answer:

Verified
Correct Answer:
Verified
Q27: The greatest cause of the worldwide loss
Q28: The wood thrush makes its nest in
Q29: European rabbits were introduced into Australia and
Q30: Endemic species are _.<br>A)usually the dominant species
Q31: The loss of a particular population from
Q32: Ecotourism _<br>A)decreases biodiversity by causing increased speciation
Q34: Provide several reasons why our estimates of
Q35: Biodiversity enhances human food security because it
Q36: What is the value,to humankind,of biodiversity?
Q37: Changes in habitat have tremendous effects on