Answer: Oxygen: Passive transport
Carbon dioxide: Passive transport
Fructose: Passive transport
Glutamine: Endocytosis
Sodium ion: Active
Potassium ion: active
Protein molecule: active
Explanation:
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Answer:
gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
Explanation:
older
the deeper you dig into the earth, the farther back into history you are going.