Which factor would scientists consider evidence that humans are causing the current mass extinction?

a. The extinction rate is lower than extinction rates from natural causes.
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b. Mass extinctions have occurred throughout history.
c. We can count the number of species currently going extinct.
d. The extinctions are occurring only in regions densely populated by humans.
e. Megafauna on all continents began to go extinct shortly after humans arrived.
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regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.

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