todays atmosphere Flashcards
1
Q
what are the prosenteges of gases in todays atmospheres
A
nitrogen 78% (not that reactive)
oxygen 21%
argon 0.9%
carbon dioxide 0.04%
2
Q
how was carbon locked in rock
A
plant use photosynthesis the wast products of this is glucose and oxygen. during photo synthisis carbon from the glucose can end up in new plant matter. animals eat the plants the carbon can go to there tisues and including the skeliton and shelles. over millions of years the marien organisms build up in the bottom of the ocean. eventuly deposits form sedimatry arbon rocks such as lime stone
3
Q
were did some carbon go
A
it dissolved in the oceans
