Of the following pesticides and their LD50s (milligrams of pesticide/kg of rat) in rats, which pesticide is most toxic to rats?
A) pyrethrins (200-2600)
B) nicotine (230)
C) lindane (91)
D) aldicarb (1)
Correct Answer:
Verified
Q1: In 1957,Clear Lake in California was sprayed
Q4: An early source of phosphorus for agriculture
Q5: Plants incorporate phosphorus into
A)amylopectin.
B)RNA.
C)bacteria.
D)phosphoric acid.
Q7: Which of the following statements about humus
Q8: Nitrogen must be "fixed" to convert it
Q10: DDT is particularly harmful to birds because
Q16: The three primary plant nutrients are
A)phosphorus, nitrogen
Q17: The conversion of phosphate rock and bone
Q18: DDT was NOT effective against
A)foxes.
B)grapevine pests.
C)lice.
D)mosquitos.
Q20: DDT is concentrated in living organisms because
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