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Biology, 26.08.2021 05:40 bwright142
Im back :D question is: A dam is built on the Columbia River in 1938 and then eight more dams were built between 1940-1950. What happens to the fish populations when dams are built?
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Biology, 22.06.2019 10:00, alexwlodko
Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.
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Im back :D question is: A dam is built on the Columbia River in 1938 and then eight more dams were b...
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