So by being a vegetarian or vegan we help the environment in big ways and doing so also allows us to continue increasing production of bio-fuels without raising the price of food too drastically. How? It would free up ranch land to be used to grow more wheat, rice and soy to further offset the price of corn. Switching that ranch land from raising animals for food to growing crops would also help the food shortage world wide as we'd have a surplus of grains that could be shipped to areas who desperately need it.
Just raising something to think about.
~Peace to all beings~