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Biology, 21.06.2019 23:00, genesisheaven1
The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?
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Biology, 22.06.2019 01:30, christpress0
15 ! come and answer! a(n) disease is caused by a pathogen and can spread among organisms. a infectious b noninfectious c toxic d contaminated
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Give an example of terrestrial food chain. what percentage of energy is transferred to the next high...
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