Which is not an example of natural climate change a Milankovich Cycles b volcanic eruptions c acid rain d plate tectonics?

Acid rain is not an example of natural climate change; it is primarily a result of human activities, such as the burning of fossil fuels that release sulfur dioxide and nitrogen oxides into the atmosphere. In contrast, Milankovitch cycles, volcanic eruptions, and plate tectonics are all natural processes that can influence the Earth's climate over long periods.