Sorry to break it to you, but organic foods contain a lot of chemicals too...
Organic farmers use fewer pesticides than "latifundia" farmers and use different farming methods that help reduce the number of artificial (DDT and the like) chemicals being added to food before it's processed.

Try some mouldy peanuts - and hope the mould didn't contain aflotoxin which is HIGHLY carcinogenic; ditto mouldy grain.
How about we try some bitter almonds? That's got cyanide! No one eats mouldy peanuts, grains, dairy, so it's really pointless to say that they have toxins or carcinogens, because I'm not eating it and it probably won't enter my system.

Naturally broken down? What are you on about? unless you're referring to chlorinated sugars and the like a given sugar is broken down whether natural or processed.
Processed foods are by definition modified from original content. Twinkies, Cheetos, etc. are all made from processed corn, which not only increases the dangers of obesity and diabetes but is also alot more complex than grains (corn can pass through your system without being fully digested).

3) Possibly true, but good old "organic" silage can destroy a river just as quickly as it too is very high in nitrogen.
If you dump too much of anything into a river, problems will occur. To say that organic silage is just as dangerous as artificial fertilizers, however, is bordering on the preposterous.

Organic food requires massively more land for agriculture
Organic food has a far higher rate of wastage due to pests
Organic food can contain pathogens from the organic fertiliser or toxins, which, although rare are generally far more poisonous than pesticides
What a broad statement.
Higher wastage I can see, but if the farmers are smart about it they don't have to waste as much, nor foster the creation of insects that can aren't affected by current pesticides.
The "organic toxin" argument sounds like an argument against marriage because your child might get hemophilia.

Organic farming is more natural and more beneficial, less a danger to me and the environment.

(P.S., Smoking kills and causes cancer).