Read excerpt from "Improving Old MacDonald's Farm."

Question

One important source of water pollution caused by farming activities is called sedimentation. Sedimentation occurs when wind or water runoff carries soil particles and dumps them into a nearby lake or stream. Too much sediment can cloud the water, which reduces the amount of sunlight that reaches aquatic plants. It can also clog the gills of fish or smother fish larvae.

How does the structure identified in Part A contribute to the development of ideas in this section of the article?

Responses

It compares the effects of sedimentation on aquatic plants to the impact on fish.

It describes how farming activities have caused sedimentation throughout history.

It shows that because farming activities are polluting the water, sedimentation occurs.

It explains the steps that lead to water pollution.

Answer 1

The structure identified in Part A contributes to the development of ideas in this section of the article by showing how sedimentation from farming activities can have negative impacts on aquatic plants and fish. By explaining how excessive sediment can cloud water, reduce sunlight reaching plants, and harm fish, the structure helps to illustrate the various consequences of sedimentation on aquatic ecosystems. This comparison helps to emphasize the importance of addressing sedimentation as a source of water pollution caused by farming activities.

Answer 2

Which answer choice is correct?

Answer 3

It compares the effects of sedimentation on aquatic plants to the impact on fish.