AP Environmental Science Quiz
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AQUATIC AND TERRESTRIAL POLLUTION
Question 1
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A toxin's
L
D
50
LD_{50}
L
D
50
in rats is
250
mg/kg
250\ \text{mg/kg}
250
mg/kg
. A lab rat weighs
0.4
kg
0.4\ \text{kg}
0.4
kg
. The
L
D
50
LD_{50}
L
D
50
dose for this rat is:
A
100
mg
100\ \text{mg}
100
mg
B
625
mg
625\ \text{mg}
625
mg
C
10
mg
10\ \text{mg}
10
mg
D
0.1
mg
0.1\ \text{mg}
0.1
mg
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