The most significant outcome of the Miller and Urey experiment was that they:a
were the first to synthesize living cells.
b. demonstrated natural selection.
c. proved that the iron-sulfur world hypothesis was false.
d. proved that life did not originate on Earth.
e. synthesized organic molecules from inorganic materials.
E
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The geologist who, in 1830, renewed the idea of uniformitarianism by showing gradual changes in some organisms that were found in successive fossil layers was
A. Georges-Louis Buffon. B. Charles Darwin. C. James Hutton. D. Jean Lamarck. E. Charles Lyell.
The area of an ocean between the coast and the edge of the continental shelf is the _____ zone.
A. benthic B. neritic C. pelagic D. intertidal E. littoral
Compared to life in the water, what was one benefit to a transition to living on land 450 mya?
A. easier to withstand gravity B. easier to find pollinators C. less CO2 D. easier access to water E. more abundant sunlight
Leaf blades grow larger as a result of cell division in the
A. marginal meristems. B. lateral meristems. C. apical meristems. D. All of these are correct.