Conservation biologists conduct population viability analyses to determine ____
a. whether an environment is too badly degraded to support a species
b. how large a population must be to ensure its long-term survival
c. likely source populations
d. likely sink populations
e. the annual reproduction rate of a population
ANSWER: b
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A regulon always includes at least two operons
Indicate whether the statement is true or false.
One technique for chromosome analysis is called ____________________, which uses chromosome-specific DNA sequences attached to fluorescent dyes to target specific chromosomal regions
Fill in the blank(s) with correct word
Which of the following statements about biological diversity is NOT true?
A. Many species that are in danger of extinction have not been identified and studied. B. Biodiversity is evenly distributed throughout the biosphere. C. Scientists estimate that 10-50 million species exist. D. Biodiversity refers to the variety of life on Earth. E. Biodiversity is described in terms of genetic, community, and landscape diversity.
Approximately 45% of a person's body weight is:
A) interstitial fluid. B) intracellular fluid. C) extracellular fluid. D) intravascular fluid.