Even though a tremendous amount of the sun's energy strikes the Earth every day, why doesn't the Earth overheat?
A) Much of the heat melts rocks, forming lava deep inside the Earth.
B) Most of the energy is used in photosynthesis to help plants grow and survive.
C) The energy mostly is absorbed in various weather systems.
D) The energy is ultimately radiated back to space.
D
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Which of the following problems does international globalization tend to exacerbate?
A) climate change B) air and water pollution C) deforestation D) climate change, air pollution and water pollution E) air and water pollution, climate change, and deforestation
Which of the following is NOT a strong centripetal force in the United States?
A) the Pledge of Allegiance B) the U.S. flag C) the many ethnic groups living in the United States D) "The Star Spangled Banner" E) baseball
The activation of phosphorylase b involves which of the following?
A) conversion of one form of chemical energy to another B) conversion of chemical energy to electrical energy C) conversion of chemical energy to heat energy D) conversion of one form of chemical energy to mechanical energy
Chemicals were first used to kill or ward off pests
A. about 70 years ago. B. since the beginning of modern chemistry several hundred years ago. C. during World War II. D. thousands of years ago.