The vast majority of CO2 in our atmosphere comes from plants, soil and the ocean. The vast majority of O2 in our atmosphere comes from the respiration of plants.
Ok, this is what bugs me. Whether or not we can stop global warming isn't the issue here. The majority of it really could be outside our cause, yadda yadda, blah blah.
But in terms of Carbon, this bothers me. "A little knowledge is a dangerous thing". You don't really understand the concept, but you allow yourself to be swayed by tidbits of information without any concept of their context.
How much CO2 we burn is irrelevant. We could drive vehicles which belch biodiesel smoke out the back all day every day. And never cause any warming due to CO2 (which does happen, other causes may contribute to more warming, but CO2 is a greenhouse gas, its the core of our biosphere and all science in biology, get over it)
We could also have the most advanced, low emission cars burning fossil fuels, and eventually, the earth would warm.
The problem isn't the amount of Carbon burned, its the amount of NEW carbon added to the biosphere.
Think of the Biosphere as a closed system (which it is) circulating carbon around in circles. Like water in a Hydraulic system.
When you burn wood, ethanol, corn, etc, you are just moving around the carbon. You remove it from the ground (stored in the plants) , put it in the air, then new plants use it to grow..storing it again.
Perfect cycle.
With fossil fuels, you dig up carbon that has been removed from the closed system. The last time it was part of the biosphere was during the time of the dinosaurs..when the whole planet was a steamy jungle. AKA, it was far warmer.
And you add this new carbon into a closed system, like injecting more water into a Hydraulic system.
This is why breathing and cow farts can eject such massive carbon into the air and not affect our climate.
Its not about how much carbon is in the air, that is critical to our entire planet living. The problem is how much NEW carbon is injected into the air.
more Carbon means more heat and more plantlife. Turning the place into the steamy jungle it used to be.
While the sun may be causing more warming, we can control that too. Simpley push more carbon underground and cool the planet.
Whether or not we are the cause, the planet is still warming and we have the ability to stop it. Bickering about it is pointless. Its like refusing to use a fire extinguisher until you and your friend solve an arguement over who caused the fire.
Bitch later, fix now.