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Biology, 22.06.2019 13:10
Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed
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Biology, 23.06.2019 03:40
Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowing extra gills, for oxygen extraction the ability to grow larger extra fat, for warmth
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