List the representatives of the roundworms.

Now about 25 thousand species of parasitic worms or free-living nematodes are known. Their actual number, according to various estimates, can reach several hundred thousand species. Roundworms include roundworms, hairworms, Trichinella, pinworms and many other species. Many of them harm the host’s body. Since the waste products of many types of worms are toxic. People who become infected with hookworms suffer from kidney and digestive problems. Doctors recommend that patients, when treating worms, take drugs that cleanse the liver and kidneys, which are suffering from the life of parasites.