AP Environmental Scienceeasymcq1 pt
Chemical A has LD50 = 5 mg/kg; Chemical B has LD50 = 500 mg/kg. Which is more toxic?
A.Chemical A
B.Chemical B
C.They are equally toxic
D.LD50 cannot compare toxicity
Explanation
Core Concept
A lower LD50 means a smaller dose kills half the test animals — A is a hundred times more toxic than B.
Correct Answer
AChemical A
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