Disposal of radioactive wastes in clay-rich sediments of the deep sea floor
A. would provide some containment of radioisotopes even in the event of leakage of wastes from canisters.
B. would be impractical because of the instability of the sea floor.
C. is not seriously under consideration because of the danger of water pollution.
D. is presently banned by international treaty.
Answer: A
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As of 2009, per capita CO2 emissions in the United States were
a. Two times as high as China b. Five times as high as China c. Two hundred times as high as some of the world's poorest countries d. A and C are correct e. B and C are correct
The major barrier to both plant and animal inhabitation of the land was their method of
reproduction. Indicate whether the statement is true or false.
Upon looking at a map of population density for the Oceania / Pacific region, it is evident that Australia's population is predominantly in coastal areas specifically in the southeast
Indicate whether the statement is true or false
Which of the following is not a reason that global climate warming is so difficult to understand?
A. We don't have enough information to make informed decisions about human influences on global climate warming. B. There are ways in which global climate change can create negative feedback loops, keeping warming from occurring at all. C. There are ways in which global climate warming can create positive feedback loops, making warming occur faster. D. The complexity of the global climate is very difficult to model with computers, making it tough to predict what might happen. E. We don't have enough data from the geological record to hypothesize how the Earth's climate system works.