Which of the greenhouse gases are the most significant contributors to global warming? How do they work?
What will be an ideal response?
Carbon dioxide, water vapor, methane, nitrous oxide, ozone, and CFCs and other halocarbons are the most significant contributors to global warming. They work by adding to the Earth's atmospheric blanket. When this insulating blanket is thicker, heat doesn't escape the Earth to space as easily and the Earth warms. Most of these
gases are natural and contribute to an important insulating atmosphere. Without them, the Earth would be too cold to sustain life. When the blanket grows thicker because of human additions, the Earth warms beyond average temperatures.
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The explosions at the Fukushima Nuclear Power Plant in northeast Japan following damage by an offshore earthquake blew the roofs off of three of the reactor buildings. The explosions were caused
a. presumably by a meltdown of the reactor cores. b. presumably by steam from the heat exchangers inside the reactor cores c. presumably by a buildup of hydrogen gas when the backup generators were disabled d. terrorists taking advantage of the chaos of the situation e. spent fuel rods that were exposed when the storage water tanks cracked and stopped cooling the rods
As in the U.S., wealthier people in European cities cluster along a sector extending out from the CBD
Indicate whether the statement is true or false.
What happened at Love Canal, New York, in the 1970s that spurred Congress to enact CECLA? What will be an ideal response?
What California county grew from less than 150,000 people around 1950 to more than 3 million today and became associated with rapid, sprawling suburban development?
A) Fresno County B) San Francisco County C) Marin County D) Orange County