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Q31: When a person is stressed, the hypothalamus
Q45: The thickness of the active layer increases
Q56: In terms of pedogenic regimes, soil acidification
Q76: Tropical savanna soils are much higher in
Q78: The general term for all glacial deposits
Q81: Which of the following is not a
Q86: Large, stable communities of plants and animals
Q127: Of the total energy intercepted at the
Q129: Areas with heavy freshwater runoff and low
Q159: Approximately what percentage of the world's population