Ответ:

There are different types of animals, all of them very important for nature. For example, we fear the sharks and find them dangerous, whereas they naturally keep sea water clean and filter it.

Animals refer to fauna and they are equally important for nature and people. There are two types of animals so far: domestic and wild. Domestic animals, which we often call pets are very dear to people. However, wild animals can be rather dangerous for human beings. Domestic animals can easily live next to people, whereas wild animals’ habitat is mainly in forests, jungles and oceans.