Q: Answer the following question given this paragraph:   Habitats Nearly all protists exist in some type of aquatic environment, including freshwater and marine environments, damp soil, and even snow. Several protist species are parasites that infect animals or plants. A few protist species live on dead organisms or their wastes, and contribute to their decay.   Q: Nearly all protists exist in some type of aquatic environment, including freshwater and marine environments, damp soil, and even snow. several protist species are parasites that infect animals or plants. a few protist species live on dead organisms or their wastes, and contribute to what?   A:

Choose your answer from:
 (1). greenhouse gas;
 (2). habitat loss;
 (3). spontaneous mutation;
 (4). their decay;
The answer is:
(4).