Was there any time in the last 800,000 years when the concentration of carbon dioxide was higher than it is today?
The question is based on Figure 24-5, showing variations in CO2 and temperature anomalies in Antarctica going back 800,000 years. This temperature record shows the major glacial (cold) and interglacial (warm) periods of the later Pleistocene Epoch (2.58 million to 11,700 years ago).
What will be an ideal response?
No
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Most earthquake destruction results from
A) primary (P) waves. B) secondary (S) waves. C) surface waves. D) acoustic waves.
A low-pressure system in which the Coriolis effect is weaker than the pressure gradient force results in ________ flow
Fill in the blank(s) with the appropriate word(s).
Some taboos against eating pork may be partly explained because
A) pigs are not well-suited to hot, arid environments. B) pigs did not originate from those regions. C) pigs are filthy animals. D) of genetically transmitted food allergies. E) other meats are preferred.
Nuclear power plants in use today rely on
A) fission reactions to generate heat to boil water. B) fission reactions to directly generate electricity. C) fusion reactions to generate heat to boil water. D) fusion reactions to directly generate electricity.