Tapeworms are flatwormsparasitic in the digestive tract of vertebrates. They consist of a round head, called "scolex", which has hooks, and a tape-shaped tail divided into segments, each of which has reproductive[?] organs.
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... the reindeer in the north, and the musk deer, hares, squirrels, rats and mice everywhere. The avi-fauna is the common Siberian, and the rivers swarm with fish, especially ...