Q: When drinking water is treated, what is the term for when chemicals cause solids in the water to clump together? Choices: - clumping - oxidation - plasma - coagulation A:
coagulation
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Q: What happens to the crust if the moving oceanic crust reaches a deep sea trench? Choices: - ocean volcano - it cleaves - forms a continent - sinks into mantle A:
sinks into mantle
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Q: What results when birth rates fall even lower than death rates? Choices: - disease - mutation - increased growth rate - negative growth rate A:
negative growth rate
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Q: If environmental conditions deteriorate, many species can form protective what? Choices: - fibers - proteins - shells - cysts A:
cysts
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