The elements of hazard are Acid, Lava, and Poison (ordered here by date of discovery). Every trouble, danger, or harm currently known can be attributed to one or a combination of the elements. All three elements at full concentration produces Death.

The elements are thought of to be the anti-form of Food, due to their equal and opposite properties.

Acid contributes to a danger the element of corrosiveness. This is what gives bacteria its ability to decompose shit.

Lava contributes to a danger the element of heat. Fire is lava in small doses, while gamma rays are lava in big doses.

Poison contributes to a danger the element of pain. Without it, the hazards of the world would pass through you like butter.

World-renowned Wiki Camp scientist Mark Rober attempted to do a comparison between these three, but forgot about acid!

All three elements appear in the hit Disney game, Where's My Water?