This spring ,I joined a Field science club.In the club,We capture insects or frogs, crabs...some small animals, and we often make a specimen.So I have a chance of thinking about living things.
Foreign species bring many serious problems to us and animals. For example, in Okinawa and Amamiooshima, mongooses from South-West Asia are affecting rare animals in the island such as an Okinawa rail. In Guam, Brown tree snake from Australia ate endemic birds, and 8 of 11 species died out. Foreign species damige not only animals but also us. Raccoons from North America and Coypu from South America spoil crop. Foreign Grasses are one of the causes for our hay fever. Thus, foreign animals have bad influences, and I think we should be careful about living things when we travel abload.
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