Which of the following is required for the process of natural selection to occur? A. there must be a sudden environmental change
B. traits must be inherited from on generation to the next
C. Members of different species must compete with one another
D. Members of the same species must compete with one another

Answer B

Explanation:

The traits have to have variation and get passed on to children other wise it cant happen

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.