Biology, 18.11.2020 17:10 kendall984
The respiratory systems of birds are very efficient at providing oxygen to the blood, which is necessary for birds to expend the energy necessary to fly. What feature of the bird respiratory system makes it more efficient than the respiratory systems of other animals?
Answers: 1
Biology, 21.06.2019 17:40, Yung5hagger
What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds
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Biology, 22.06.2019 11:30, gymnastcaitlyn1
There are multiple lines of evidence that provide support for common ancestry and evolution. write 3-4 paragraphs describing at least three of them in detail. provide at least one example for each line of evidence.
Answers: 1
Biology, 22.06.2019 13:20, stefancvorovic1
Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false
Answers: 1
The respiratory systems of birds are very efficient at providing oxygen to the blood, which is neces...
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