11.   Even the tiniest amount of anxiety produces chemicals that will feast on certain specific weaknesses in the swing.

12.   Even industry should benefit, as microbes are harnessed to produce chemicals that are currently either impossible, or too costly, to make.

13.   Here, solar radiation can split molecules, producing chemicals that could supply energy for life.

14.   In a closely related effort, companies are also trying to use plants to produce industrial chemicals.

15.   Its roots produce a chemical that is poison to other species.

16.   Libya denies the plant produces deadly chemicals and on Thursday offered to discuss the matter with Washington.

17.   Once in the tree, the fungus produces chemicals that dissolve tree tissue, causing oozing sores in the bark.

18.   Once the virus penetrates a cell, that cell should start producing the chemical needed for blood clotting, helping the hemophiliac.

19.   Scientists have known for years that animals produce chemicals that are picked up by receptors within the nose of another of the same species.

20.   Spruce trees produce chemicals, called terpenes, that are supposed to drive beetles off.