Organelles help keep the cell alive.They are surrounded by membranes.Each type of organelle has a specific function that helps the cell.Several kinds of organelles are suspended in the cytoplasm. Organs help pump blood to all parts of your body.
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Answer:
sedimentary rocks
Explanation:
can be dated using radioactive carbon, but because carbon decays relatively quickly, this only works for rocks younger than about 50 thousand years. So in order to date most older fossils, scientists look for layers of igneous rock or volcanic ash above and below the fossil.
Energy comes from the SUN
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