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Q3: Which type of effect is occurring if
Q10: Of all the water on Earth, less
Q17: What is the cause of the majority
Q32: Which letter in the diagram corresponds to
Q34: Natural causes of _ include volcano emissions,
Q69: The _ assumes that efforts to prevent
Q75: _ is mined for the steel industry,
Q77: To which category do nitrates and phosphates
Q87: Which type of coolant is used in
Q89: Which of the following is a characteristic