The movement of molecules into the cell through transport proteins in the cell membrane is a type of what

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answer is

human impact on the environment can be seen in the deterioration of the !

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sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.