Because the universe is made of chemicals. You are made of chemicals. Your desk is made of chemicals. Even your computer has a chemical composition.
If you mean why do foods have pesticides in them, it's because farmers figured out that if the bugs don't eat the crops, they can sell them. If this is what you meant, your question is in the wrong category.
Organic chemistry refers to the chemistry of carbon molecules.
anywhere! chemicals are in everything
Everything contains chemicals dude
easy answer: YES! EVERYTHING in the universe has "has chemicals on it"
When anything is burned, it releases chemicals, because everything is "chemicals".
All medicines have chemicals in them, as everything around us can be defined as chemicals.
because everything is consider chemicals
Very nearly everything is "made of chemicals".
Without chemicals there would be no matter at all. Everything is made of chemicals; water, stomach acid and chocolate are all made of chemicals.
Yes. But of course, everything contains chemicals. Fruits, vegetables, grains, are all composed of chemicals.
Anything you can touch has chemicals in it.
Naturally occurring and man-made chemicals are in everything around us.
Because everything is made of chemicals.