You buy a house on a small inland lake and your front lawn ends at the water's edge. a lawn care company representative suggests you fertilize the lawn to keep it lush and green. you agree to the treatment and then discover there is a major weed problem in the lake. the most likely cause of the weed problem

a. nitrogen.
b. nitrites.
c. sulfates.
d. phosphates.
e. carbon.

The correct answer is- d. Phosphates

Explanation:

Phosphates contain phosphorus which is present naturally in water bodies like lakes. When the amount of phosphorus increase in the stagnant water bodies it makes a suitable environment for overgrowth of weeds which covers the water surface.

Phosphorus is used as a constituent in fertilizers so when this fertilizer reaches water bodies through rain or runoff then it increase the phosphorus level in water which allow the weed to grow exponentially and cause weed problem. Therefore the most likely cause of this weed problem is phosphates.

substitution is the answer in this case

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