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."

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

the components of a vector are the parts of the vectors that are to each other.

b perpendicular

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =