The gray whale and other baleen whales migrate every year to ________
A) feed in the Arctic and Antarctic regions during the winter
B) feed in the tropics during the summer
C) feed in the tropics during the winter
D) mate and give birth in the Arctic and Antarctic regions during the summer
E) mate and give birth in the tropics during the winter
E
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When a lot of water is pumped from an aquifer, or when there is a dry spell, the ____________________ sinks lower.
Fill in the blank(s) with the appropriate word(s).
A single ecosystem will include
A) an interactive complex of communities but not the abiotic environment. B) the abiotic environment but not an interactive complex of communities. C) many communities of living organisms, some of which may include humans. D) either a plant community or an animal community, but not both.
A river's velocity is ________ on the outside of a meander curve compared to the inside.
A. equal B. lower C. higher
Transportation efficiency refers specifically to ________
A) using carbon capture and storage (CCS) technology B) employing more hybrid vehicle technology C) improving fuel efficiency in electric power plants D) employing more renewable fuels E) increasing fuel conservation measures