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Describe major trends in the evolution of life on Earth seen over geologic time supported by fossils.
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Biology, 21.06.2019 13:30
Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.
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The cluster of developing cells from conception until birth is called an
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Biology, 22.06.2019 10:30
Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.
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Biology, 22.06.2019 12:20
Which organ controls breathing? lungs alveoli heart diaphragm
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Describe major trends in the evolution of life on Earth seen over geologic time supported by fossils...
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