Extinction means that the species of animal is gone forever and will not come back. Scientists think that every day 1 to 3 species of animals or plants are extinct. Animal and plant make up ecosystems. They depend on each other. When part of the ecosystem is gone, the other pars are in danger! This means that extinction hurts everyone: animals, plants, and people!
Many people do not believe that animals around us will be gone forever. People sometimes think that it is not possible that ALL manatees will be gone. But, a cousin of mantee called a Stellar Sea Cow was extincy by people hunting it in 1786. Stellar sea cow was the only manatee that lived in cold water. It was about 35 feet long. It does not exist any more.
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