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Ascientist conducts a test and finds out that the ld50 of a certain chemical is 20 mg per kilogram. explain what this means.
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Find and describe the climate zone in which you live,where else in the world do you find this climate zone? do you have any ideas about why the climates might be similar?
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Ascientist conducts a test and finds out that the ld50 of a certain chemical is 20 mg per kilogram....
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