Some anticyclones move into the midlatitudes from northern Canada in what are called _______________ of frigid continental polar air. (two words)
Fill in the blank(s) with correct word
polar outbreaks
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Plants colonizing bare rock after a volcanic eruption denudes an area is an example of primary succession
Indicate whether the statement is true or false
How do the global trends in air pollution differ from those in the United States?
What will be an ideal response?
Radon gas can accumulate in people's homes and pose a serious lung cancer risk. What is the source of the radon gas?
A. contaminated groundwater surrounding nuclear power plants B. byproduct from the breakdown foam insulation used in home construction C. byproduct from the breakdown of asphalt roofing shingles used in home construction D. radioactive decay of uranium minerals found in rocks and sediment E. breakdown of natural gas deposits
Tropical coral reefs support a very diverse and highly populated community, including calcareous algae whose
secretions help "cement" the coral reef together. In this community, the coral reef structure is the algae's ____________ and the algae's job of cementation is its ____________. Fill in the blank(s) with the appropriate word(s).