The continents do move as new material from the center of the Earth rises, hardens and pushes older pieces of the Earth away from each other. They called their theory “sea floor spreading.” The theory explains that as the sea floor spreads, the tectonic plates are pushed and pulled in different directions
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The organelle in a plant that uses the sun's energy to make sugar is the chloroplast
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By replacing the genes for either the 1918 virus’s surface protein
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