"Summarize" coates article " civil rights protests have never been popular" in 200 - 250 words

your answer is c) experiments with water vapor showed that elements combine in specific proportions.

the gas pressure p, gas volume v, and gas temperature t are given in the formula:   pv=nrt,

r is the gas constant, and n is the number of gas moles.

if the container is cooled and remains under atmospheric pressure, where r is a constant that does not change, the volume of the container remains the same, the conclusion is drawn that, with all other values ​​unchanged, the number of gas moles n, is decreases.

the right answer is a.

the meaning of the phrase fnch clear means it is understandable and readable.