As you point out, plants break down the water molecules to produce the oxygen, but the CO2 is the fuel used for that process, just as my engine produces torque by using a combination of fuel (gasoline or diesel) and air.
You can choose a DNA without a subscription to the Ancestry.com service, a DNA test with a subscription to U.S. discovery service or a DNA test with World explorer. Once you choose an option, Ancestry.com will ship you a test kit. The test kit has a small mouth swab which you wipe on the inside of your mouth.
Your AncestryDNA test results will normally take about 6-8 weeks to process from the time that the lab receives your DNA sample. Please note that you must also activate your DNA kit online in order to begin processing.our AncestryDNA test results will normally take about 6-8 weeks to process from the time that the lab receives your DNA sample. Please note that you must also activate your DNA kit online in order to begin processing.