Which of the following levels of organization includes all of the others?

A. Population
B. Ecosystem
C. Community
D. Organism
E. Habitat


Ans: B. Ecosystem

Biology & Microbiology

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Which of the following events increases variability in a population?

a. genetic drift b. bottleneck c. stabilizing selection d. gene flow

Biology & Microbiology

The biome with the most complex diversity of life forms is the:

a. tundra b. taiga c. tropical rain forest d. desert e. grassland

Biology & Microbiology

The source of blood for the glomerular

capillaries is indicated by a. A. b. B. c. C. d. D. e. E.

Biology & Microbiology

The oldest eukaryote identified in fossil records is thought to have appeared about ____ million years ago.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology