Although unusually high, extinction rates may be
A) declining because of overestimates of some groups in some ecosystems.
B) declining because fewer species are becoming threatened worldwide.
C) even higher because of the loss of tropical forests.
D) even higher because of intense predation in many grassland ecosystems.
Question 2
In general, the species most vulnerable to extinction are those that are
A) endemic, highly specialized, or limited to a single population.
B) endemic and widespread in several large regions.
C) genetically diverse and found in many regions.
D) widespread but are not dominant in an ecosystem.
A very high-resolution texture of the planet Mars
International Television Viewing Rates in Childhood In most developed countries, children watch TV
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