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What is waste soil and rock removed during surface mining called?
Q20: What is released by an erupting volcano?<br>A)oil<br>B)carbon
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Q54: What is the pH of typical, natural
Q59: Desertification increases run-off, soil erosion, groundwater recharge,
Q71: Which strategy to reduce acid deposition is
Q78: A nonlinear dose response model applies if
Q89: What do commercially available inorganic fertilizers do
Q90: To tap the _ in an aquifer,
Q92: On what percentage of the world's croplands
Q119: What is the source of grey-air smog?<br>A)carbonic