Phytoplankton patchiness in the epipelagic can occur when:
a. water clarity declines.
b. there is an influx of nutrients.
c. surface waters plunge to depths.
d. fish aggregate.
e. hydrothermal vents erupt.
B
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Which of the following explains how chimpanzees and humans can be so different with such similar genomes?
A. The anatomical and behavioral differences between chimpanzees and humans isn't that large. B. Different environments between the two populations influenced the anatomical and behavioral differences. C. The human population is so much larger than the chimpanzee population that we benefit from more genetic variation. D. The genetic differences could have occurred in genes responsible for development. E. None of the answer options is correct.
Succulent plants such as cacti or pineapple
A. tend to undergo substantial rates of photorespiration. B. are highly efficient at photosynthesis in cooler and wet environments. C. produce 4-carbon malate in the first step of carbon fixation. D. continually produce sugar, both day and night under hot, arid conditions. E. are C3 plants.
The age structure diagram for countries with a 6.5
total fertility rate is indicated by a. A. b. B. c. C. d. D. e. none of these.
three major parts of a cell
What will be an ideal response?