Which of the following are polyatomic ions? Check all that apply a. Co
b. CN
c. H
d. CO3
e. Fr
f. NH4

NH4 is the correct ans

Explanation:

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the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

bcde is the incorrect answer it is a