How do you say this in another way?

"Life as we know it would not exist, mainly because life today on earth is suited for our current atmosphere, which is made up of approximately 78% nitrogen and oxygen, with remaining 1% made up mainly of argon and traces of other gases."

You can make it shorter or easier if it helps...



The cars which we use have smoke coming out of them mixes with air in our atmosphere. As the smoke contains canbon-di-oxide, the level of the canbon-di-oxide increases the temperature of the earth will increase and there will be no life on earth. 
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