According to the hardy-weinberg theorem, a. allele frequencies remain constant when microevolution occurs. b. evolution occurs at the population level when allelic frequencies change. c. only large populations have the capacity to evolve. d. natural selection acts at the population level. e. genetic drift cannot change genotypic frequencies.

most likely to see nocturnal animals

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.