The structure, stability, and maintenance of all ecosystems results from the
A) bacteria, fungi and soils in that ecosystem.
B) types of plants in that ecosystem.
C) types of animals in that ecosystem.
D) the totality of all interactions of organisms in that ecosystem.
D
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Which of the following is not a real compound?
A) 1-hydroxybutanoic acid B) 2-hydroxybutanoic acid C) 3-hydroxybutanoic acid D) None, they are all real compounds.
The prices received for exports relative to the prices paid for imports is called the ________ ___ ________
Fill in the blank(s) with correct word
Humans benefit from the persistent rise and fall of tides because they can be used as a source of
A) fresh water. B) coal. C) electricity. D) sediment.
The increased reliance upon raw materials from many parts of the world resulted from which revolution?
A) The Industrial Revolution B) The Medical Revolution C) The Green Revolution D) The Environmental Revolution