Currently, desert and steppe lands cover about what percentage of Earth's land area?
A. 3%
B. 10%
C. 30%
D. 66%
Answer: C. 30%
You might also like to view...
Hurricane Katrina lost most of its power when
A) sea surface temperatures underneath it increased. B) it was still a tropical depression. C) it made landfall in the United States. D) its eye was most fully developed. E) its spiral rainbands were most prominent.
The current practice of geothermal power generation may not always provide a practical renewable energy source because ________
A) power plants have high maintenance costs B) in many cases, the magma is used faster than it is recharged C) in some cases, the heated groundwater is used much faster than it is recharged D) in some instances, pollution emissions can be very high E) geologically heated groundwater is unsuitable for these plants and must be purified first
The water in the majority of wells cannot rise above the level of the water table on its own
Indicate whether this statement is true or false.
Fluvial process includes both the stream flow within valleys as well as ________
A) overland flow B) rock glaciers C) hydrolysis D) groundwater E) underground solution