River ecosystems need a delicate balance of environmental factors to thrive. Which sentence from the article BEST supports the statement above?

Group of answer choices

A third of U. S. rivers have significantly changed color over the last 36 years, turning from blue to yellow and green, striking new images reveal.

"Sediment and algae are both important, but too much or too little of either can be disruptive," Gardner said.

In the North and West, rivers tended to become greener, whereas the eastern regions of the U. S. had a trend toward yellow rivers.

"You could totally see these trends going back in the other direction," Gardner said, "especially if the change is occurring due to local mismanagement that is easily fixed."