Climatic models predict that the concentration of a certain gas must increase in the atmosphere for CO2 to produce a global warming of between 2°C and 5°C. According to this prediction, which of the following gases must increase?
A. chlorofluorocarbons (CFCs)
B. water vapour (H2O)
C. sulfur dioxide (SO2)
D. ozone (O3)
Answer: B
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Assuming a household water consumption of 70 gallons per day per capita, what was the total amount of water that was consumed during 2010 by all of the people in the United States? (Note: The population of the United States in 2010 was about 309 million people.) How much water would have been saved if the per capita consumption was reduced to 60 gallons per day?
What will be an ideal response?
A survey in August 2011 on the world wide web was conducted by the news agency CNN, and asked participants to rate the more serious problem with the United States economy, given the choices 1) the debt crisis or 2) unemployment
The majority of respondents voted unemployment as the more serious problem. Give at least one example from this chapter of how using renewable energy can help solve this problem in the United States. What will be an ideal response
The surface wind zones that flow from the subtropics toward the equator are called the ________ winds
Fill in the blank(s) with correct word
Soils are an important resource for all the following reasons except
A. they are a source of aluminum. B. they are a renewable resource. C. they are the essential medium for growing food. D. they are a source for building materials.