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Biology, 21.06.2019 21:30
Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1
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The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food
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Biology, 22.06.2019 11:30
Which structure in the cardiovascular system connect arteries to veins?
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