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Biology, 21.06.2019 22:00
What is thought to have caused the mass extinction at the end of the cretaceous period?
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Biology, 22.06.2019 03:00
Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.
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Biology, 22.06.2019 04:30
Whats one way that rocks do not follow the typical rock cycle pathway?
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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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Mathematics, 07.10.2019 16:30
History, 07.10.2019 16:30
Mathematics, 07.10.2019 16:30
Mathematics, 07.10.2019 16:30
Chemistry, 07.10.2019 16:30
Geography, 07.10.2019 16:30
Mathematics, 07.10.2019 16:30
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English, 07.10.2019 16:30