The thermocline or area of rapid temperature change in the ocean is important because ________
A) it controls the climate and rate of evaporation and precipitation near the oceans.
B) the ability for the ocean to dissolve CO2 from the atmosphere is dependent on temperature over a range of depths.
C) it forms a barrier to many types of marine life that can only exist within certain temperature ranges
D) different chemical compositions form at different temperatures
E) none of the above
C
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When we say there is no such thing as only one force, we mean
A. there must also be an oppositely directed force. B. other forces, perhaps not evident, are there. C. both of these D. none of the above
The energy efficiency of a hybrid car is tied to
A) the use of hybrid gasolines. B) the generation of electricity from rooftop solar panels and wind turbines affixed to the sides and undercarriage of the car. C) the use of a gasoline engine at high speeds, whereas at low speeds an electric motor takes over; moreover, energy that would have otherwise escaped as heat is captured and stored while the car is coasting and braking. D) the use of a gasoline engine at low speeds, whereas at high speeds an electric motor takes over; moreover, energy that would have otherwise escaped as heat is captured and stored while the car is coasting and braking. E) the use of a gasoline engine at high speeds, and at low speeds, when the gas engine is at its most efficient, an electric motor takes over. Energy that would otherwise be gained while coasting and braking is lost as electricity and heat when it would otherwise be needed.
According to your text, approximately how many Africans were brought to the New World as a result of the slave trade?
A) 20 million B) 40 million C) 60 million D) 80 million E) 160 million
Alfred Russel Wallace's zoogeographic realms roughly correspond to continental plate boundaries
Indicate whether the statement is true or false