It is the most salt for snacks because salt gives it a good taste
the rest - others will edit this answer
Rock salt is not as pure. There is often foreign material left from when they scraped it up from the ground. Food grade salt is much cleaner and it includs iodine which is there to prevent thyroid problems. You can still get coarse salt that is considered "food grade". If you are using it to melt snow use the rock salt its cheaper and the larger grains give better traction
they use it to flavour food
Depends how quickly you want them to die. Never use salt. Sprite is a great floral food.
I use too much salt
Salt is a natural product; the first use was as a food additive.
To preserve the food
Because its a preservative.
No, you pretty much have to use salt.
It is a partial yes. It is not poisonous so if you add salt to your dogs food it is fine but too much salt in a dogs diet can cause skin allergies and hair fall in dogs. So it is better to reduce the salt to 1/3rd or 1/4th the quantity that we humans use.
Sugar (table sugar) is an element that we use to make food sweet. Salt is also a compound, we use salt (table salt) for many things.
no, they do not. they only use salt in their fries.
This depends only on your requirements.