Which of the following would not be found exclusively in the benthic environment?
a. coral reefs
b. clams and oysters
c. kelp
d. eel grass
e. nekton
E
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What would result for global climate from a massive drop in atmospheric carbon dioxide?
A. An increase in ocean temperature B. Increased rock weathering C. A decrease in surface temperature D. Increased nitrogen availability E. A decrease in free oxygen content
The pea plant was an excellent choice for Mendel’s
experiments because a. true-breeding varieties were available. b. the plant can self-fertilize. c. it can be cross-fertilized. d. true-breeding varieties were available, and it can be cross-fertilized. e. true-breeding varieties were available, the plant can self-fertilize, and it can be cross-fertilized
What are soil particles that are decomposing organic matter called?
a. sand b. humus c. silt d. clay
You do an experiment in which you increase the concentration of phosphate in a solution and measure the uptake by plant cells. You find that once the concentration of phosphate reaches 1 gram per liter adding more phosphate does not increase uptake any further. From this you would conclude that phosphate is taken up by ________.
A. endocytosis. B. osmosis. C. exocytosis. D. facilitated diffusion. E. active transport.