Scientists hardly question scientific theories and test them
for validity....
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Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?
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40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume
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Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released
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