We should all go on a?

Fertiliser-Blame the Vegetable eaters.
Nitrous oxide (N2O) is over 300 times more harmful than carbon dioxide, so reducing output of this gas is particularly important....

Livestock - Blame the Meat eaters.
Methane (CH4) is another very powerful greenhouse gas, and is up to 30 times more damaging than carbon dioxide, although it spends less time in the atmosphere.

Fuel - The tractor, the lorry and the selfish sod driving to the supermarket.
CO2 is less damaging than N2O and CH4, but remains in the atmosphere for around 100 years. For this reason, any emissions today will continue to affect future generations; this is why we are already ‘locked in’ to a certain amount of global temperature rise.

So out of the three, GHC N20 is the worse offender. So why eat more veg when its ten fold worse than meat for the environment?