Other contributors have said "Any positive uses of the gas Carbon dioxide?" is the same question as "What is carbon dioxide gas used for?" If you believe that these are not asking the same thing and should be answered differently, click here
take the gas atach it to the flask with limewater....if carbon dioxide is present then it will turn cloudy...thats the answer for test of carbon dioxidei think the answer your looking for is...
capnophile bacteria like Aggregatibacter actinomycetemcomitans found in the mouth which causes juevenile periodintitis. Capnophile - meaning that it lives off of low amounts of oxygen and high...