The Rise of Oxygen in the Earth's Atmosphere: #9. Jay Kaufman said that while scientists cannot collect and study samples of the ancient atmosphere. they can "collect rocks that were formed... under that atmosphere." why are scientists able to learn about the ancient atmosphere by studying the rocks that came into contact with the ancient atmosphere?

i believe the answer is c

tenochtitlan (also spelled tenochtitlán), located on an island near the western shore of lake texcoco in central mexico, was the capital city and religious centre of the aztec civilization. the traditional founding date of the city was 1345 ce and it remained the most important aztec centre until its destruction at the hands of the conquering spanish led by hernán cortés in 1521 ce, which led to the final collapse of the aztec empire.

the russian revolution of 1917 involved the collapse of an empire under tsar nicholas ii and the rise of marxian socialism under lenin and his bolsheviks.