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Biology, 21.06.2019 14:00
Texas bluebonnet plants seen in this photo are an example of which ecological unit?
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Biology, 22.06.2019 03:40
Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.
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Biology, 22.06.2019 05:00
Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?
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Biology, 22.06.2019 05:40
Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion
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How are pitch and frequency related?...
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