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Biology, 22.06.2019 13:10, mroueh21
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, 22.06.2019 19:10, isabellawest2
which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)
Answers: 1
Biology, 22.06.2019 20:00, preciosakassidy
Name the tissue types that form the wall of each organ in questions 7-10
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What do animal cells have that plant cells don't?...
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