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Embryos of different species look very similar, which shows that the organisms share a ancestor.
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How does the principle of electromagnetism explain the interaction between earthโs magnetic field and the solar wind?
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As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter
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Polonium-209 decays from 200 grams to 12.5 grams in 8 hours. How long is one "half life"?...
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