Cassie3 is for the most part right. Although the Earth is 70% water, the vast majority of that is not suitable for crops and farming (with most of it obviously being saltwater).
Growing crops in Australia is particularly hard as it is the driest inhabited continent on Earth and very little of it is naturally suitable for farming. She's right in saying that most cattle in Australia is grass fed rather than grain fed compared to many other places in the world. However admittedly I'm not completely up to speed with the ins and outs of cattle farming in Australia and whether the farmers rely on rain for the grass to grow or require irrigation to grow the grass and, if the latter, whether this uses more water than growing grain to feed cattle. Either way, for both sides to make claims without supporting facts is speculative and pointless.
Anyway, she's probably right in saying that we couldn't feed everyone in Australia by growing crops alone (without importing produce) - that is, without depleting the Murray Darling Basin more so than it already has been.
Of course that whole discussion ignores the elephant in the room, that being the size of the population. Obviously the smaller the population, the smaller the demand on the environment...
why will no one listen to my idea of sewage water -_-'
recycle the water, the plants use it, we eat them and so forth
maybe it's because i live in south australia, and it's REALLY green here
in fact it's been raining most of the day today! i know we have alot of usable land here, the majority of it is used for wine grapes.
i used to live on a main road where all the trucks would go past with the animals boxed in to go to slaughter (the smell of them going past was disgusting, i couldn't even bare to look at the trucks)
now i don't know what type of farms they came from, but they did live and needed to be fed and watered.. this was everyday multiple times a day there trucks would go past
cattle are not the only animals that are factory farmed, so you have to account the chickens, pigs, sheep ect that are fed grain.
i agree that overpopulation is the real problem, but it's inhumane to cull people... so what do you suggest as a solution?