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Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?
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How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.
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Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above
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Biology, 22.06.2019 15:30
Slow down transpiration by the stomata question 9 options: a guard cells; closing b chloroplasts; closing c guard cells; opening d chloroplasts; opening
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This diagram shows how seed plants are grouped.
A diagram shows how seed plants are grou...
A diagram shows how seed plants are grou...
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