An image of the Gull River watershed is shown here. Why might it be difficult to predict the effects of pollution or flooding on the residents within the watershed?

Question

Responses
A Flooding occurs during random times of year, so predictions are difficult to make.Flooding occurs during random times of year, so predictions are difficult to make.
B Pollution sources cannot be determined, therefore their effects cannot be measured.Pollution sources cannot be determined, therefore their effects cannot be measured.
C Humans migrate across the watershed, making the impacts from humans difficult to predict.Humans migrate across the watershed, making the impacts from humans difficult to predict.
D A large number of water sources feed into the watershed, resulting in impacts that are difficult to predict.A large number of water sources feed into the watershed, resulting in impacts that are difficult to predict.

Answer 1

While each response presents a valid point, the most appropriate answer regarding the difficulty in predicting the effects of pollution or flooding on residents within the Gull River watershed is:

D: A large number of water sources feed into the watershed, resulting in impacts that are difficult to predict.

This is because the complex interactions among various water sources and their contributions can lead to unpredictable changes in water quality and flow dynamics, making it challenging to assess how pollution or flooding will specifically affect the residents.