A Phosphorus-Containing Pesticide Is

Q20: Which of the following is an herbicide?<br>A)2,4-D<br>B)parathion<br>C)carbaryl<br>D)diazinon

Q21: Organophosphorus pesticides are generally less _ than

Q22: The LD₅₀ for aldicarb in rats is

Q23: Which of the following statements about humus

Q24: Which of the following types of compounds

Q26: Organophosphates and chlorinated hydrocarbons have both been

Q27: In 1957,Clear Lake in California was sprayed

Q28: Which of the following is the least

Q29: Paraquat is an example of a _

Q30: Which insecticide was first used by Allied