The saltiness of the oceans is
A) decreasing slowly.
B) increasing slowly.
C) increasing rapidly.
D) constant.
Correct Answer:
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Q14: Heat of vaporization is the amount of
Q15: A characteristic of a lake dying from
Q16: Which of the following is NOT a
Q17: _ million people on earth do not
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A)oxygen.
B)nitrogen.
C)magnesium.
D)water.
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A)disease-causing.
B)an antibiotic.
C)a cure for a disease.
D)a
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