In toxicology studies,the threshold level of a chemical is the dose of the chemical_________ .
A) above which at least 50% of the organisms being tested died
B) above which there is a measurable decline in the health of the organism being tested
C) below which at least 50% of the organisms being tested died
D) below which there is a measurable decline in the health of the organism being tested
Correct Answer:
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Q2: Which of the following steps in risk
Q3: Carcinogens may be difficult to identify and
Q4: _is transmitted by an insect.
A)Malaria
B)Cholera
C)H1N1
D)Ebola
Q5: Mercury is not readily excreted but rather
Q6: Exposure to_ radiation can cause cancer.
A)X-ray
B)beta
C)alpha
D)All of
Q8: Concerned about the exposure of children to
Q9: An_is defined as a chemical that causes
Q10: You should never store strong acids in
Q11: Which of the following is a neurotoxin
Q12: Which of the following is an ecosystem
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