Instead, chemicals in the hot waters form the basis of the food chain.

The chemicals may form one of many dangerous interactions and have an unmeasured synergistic effect.

These chemicals form when solar ultraviolet light irradiates the Martian atmosphere.

"These chemicals," she explains, "form the backbone of obsessive, passionate, romantic love" - in man and beast.

Frying, grilling, and broiling meats at very high temperatures causes chemicals to form that may increase cancer risk.

Oparin outlined a way in which basic organic chemicals might form into microscopic localized systems.

There are some cases where a chemical might not form in bulk, but it might do it at the interface between two materials.

If there is only a little air, explosive chemicals may form.

When mixed, the chemicals form a highly volatile compound.

Experimental systems using this method usually use special chemicals to form a "phase-conjugate mirror".