The Topic: Worms

There are thousands of different kinds of worms. The largest species measure many feet or meters long, while the smallest worm cannot be seen without a microscope. Worms usually live in soil; some live in water. Many worms eat small plants and animals, others feed on decaying matter. Still other types of worms live as parasites in various animals and plants causing a number of diseases. Most types of worms have a well-developed sense of touch. They also have specialized organs that respond to chemicals in their surroundings. Many species have a sense of sight, with eyes or eyespots on the head.
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