Hehe, This:
"After all this talk of fuel burning and stuff nobody has yet mentioned cow farts. They emit alot of CO2 and methane gas.
Hell add in all the other creatures that fart to. Couldnt it be said that in conjunction with all the farting going on, they put out more polution that cars even?
Has a study been done? I think there was one done for just the cows, but one for everybody. Quick call the "Lets Do a Study" Organization and get them on that right quick."
Here is a challenge for you. Some facts.
1. In a western country like I live in, there are actually much more cars than cattle. (That counts down to little calfs, and the country is completely self sufficient with both beef and milk products)
2. Cows, as well as other ruminants have been around for a long time. Very long, just undergoing some species changes. (In the USA you killed all them buffalos and replaced somewhat with the cow. (Smaller)
3. You eat the cows. You eat the milk products. There is normally better economy in producing grain/vegetables/fruits of the same ground for direct human consumption, so ruminants, or generally most of animal husbondry is on a large scale decided by the humans.
4. As a sidenote, the most efficient meat production is pig/poultry. However, as they are not basically grazing animals, cattle will thrive where pigs and chicken won't. Sheep will thrive nicely on a terrain which is very difficult for cattle. However, the milk will give the best output of all, way better than meat.
All down to the humans.......