Species that are the first to colonize an area are termed species.
A. primary
B. tertiary
C. secondary
D. pioneer
E. keystone
D. pioneer
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Which cytoskeletal proteins are important constituents of the contractile structures that form the cleavage furrows involved in animal cell cytokinesis?
A) actin B) dynein C) tubulin D) myosin
Which of the following is most often used as a starter culture for the production of cheese?
A. Rennet B. Saccharomyces species C. Aspergillus species D. Lactobacillus species
In 1987, countries worldwide agreed to phase the production of ____________, once a major ozone destroyer, to reduce ozone layer thinning.
Fill in the blank(s) with the appropriate word(s).
Sepals are:
A) pollen receptacles on a carpel. B) leaf-like structures that protect a flower before it opens. C) insect-attracting structures of the flower. D) pollen-producing structures.