If water quality is directly related to the different types of macroinvertebrates in the streams, which stream has the best water quality based on the data that the scientists collected?

If water quality is directly related to the different types of macroinvertebrates in the streams,than the stream with highest number of macroinvertebrates will have highest water quality.

Explanation:

There are different animals found in water. Microinvertebtrates are the one which has no backbone. These animals live in water throughout their lives. So if any water body is rich in microinvertebrates than it indicates the water body has rich quality. These are very sensitive to pollution.

They are affected by various conditions of the stream. They cannot tolerate pollution so it helps in reducing the levels of pollution.

They can be easily seen and they can show the impacts of pollution on the water body.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.