Primarily due to habitat destruction, pollution, human disruption, fragmentation. 

A. hotspot
B. habitat loss
C. edge effects
D. megafaunal extinction
E. extinction vortex


B. habitat loss

Biology & Microbiology

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Variation among individuals in a species is usually caused by:

A. environmental variation. B. genetic variation. C. infectious variation. D. both environmental variation and genetic variation. E. environmental variation, genetic variation, and infectious variation.

Biology & Microbiology

Because ____ is less likely to occur between distant populations of the same species, their gene pools and phenotypes

are often somewhat different.

a. genetic drift b. a population bottleneck c. a founder effect d. gene flow e. asexual reproduction

Biology & Microbiology

The single long process that extends from a typical

motor neuron is the a. axon. b. neuron. c. synapse. d. dendrite. e. cell body.

Biology & Microbiology

What is the total number of different possible combinations of bases in a codon?

A) 20 B) 3 C) 64 D) 4

Biology & Microbiology