Estimates vary, but reasonable estimations of extinction rates suggest that extinction is occurring at a

rate approximately __________ above the normal background rate.
a. 10
b. 100
c. 1000
d. 10,000
e. 1,000,000


C

Biology & Microbiology

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Binary fission within vacuoles divides which of the following forms of Chlamydia?

a. RB b. EB c. Replicate body d. Initial body

Biology & Microbiology

In the evolutionary history of the earth, Homo sapiens probably first appeared approximately ________ years ago.

A) 2,000 B) 20,000 C) 200,000 D) 2,000,000

Biology & Microbiology

________ stochasticity is the random variation in birth and death rates that occurs in populations from year to year as a result of natural disasters and other annual variations in the environment

Fill in the blank(s) with correct word

Biology & Microbiology

A decreased efficacy of an antimicrobial agent during combination therapy is called

A) antagonism B) cross-resistance C) synergism D) second-line

Biology & Microbiology