They observe it, run tests on many different things, and do expirments
<span>the principal of independent assortment is the different genes </span>independently<span> separate from one another when reproductive cells develop.</span>
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Question: <span>During the ________ stage, the placenta is expelled from the uterus.
Answer: It is the placental stage.
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Good Luck Studying ^-^</span>
<span>nerve cells need b 12 for proper functioning</span>
The other two Domains being "Bacteria" and "Eukarya" (which includes us humans). Archaebacteria<span> are characterized by having different cell call components, coenzymes and RNA Sequences compared to bacteria. ... </span>Eubacteria<span> have a rigid cell wall. However, they can be both gram positive and gram-negative.</span>