Which type of pollution is believed to have the most impact on an ecosystem? select one from the choices given: disease. volcanic eruptions. floods. chemical spills

Which of the following substances is not involved in the chemical reaction that pro- duces smog? a. sunlight b. particulate matter c. automotive exhaust d. ozone

Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. when a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. is the behavior of the male goose an example of an adaptation?

In order to clone adult animals, scientists typically begin with a(n)