Biology, 19.09.2019 01:30 jacksonshalika
The yolk sac functions to form blood cells in early development. provide nutrients to the fetus when the umbilical cord is disconnected. store metabolic wastes until the fetus is born. give rise to the primary germ layers.
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Biology, 21.06.2019 22:10
What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?
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Biology, 21.06.2019 23:00
The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?
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Biology, 22.06.2019 00:30
According to the cladogram, which organisms have roundworms as a common ancestor?
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The yolk sac functions to form blood cells in early development. provide nutrients to the fetus when...
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