11.   Also, new chemicals released from the developing world or not covered by the treaty continue to attack the ozone layer.

12.   But it has become harder to find new chemicals this way.

13.   But now, instead of going around the world searching for new chemicals, molecular biologists can create them in the test tube.

14.   However, he said the rush to develop and embrace new chemicals has left adequate testing behind.

15.   Keeping your yard mowed and trimmed will help greatly to reduce flea and tick and mosquito problems, and several new chemicals are highly effective for treating the yard.

16.   More important, it is not clear that the new chemicals are effective.

17.   Monsanto shareholders will get one share in the new chemicals company for every five Monsanto shares held.

18.   The facility also serves as a badly needed testing ground for new chemicals designed to break up spills.

19.   The group says irradiation robs food of its basic nutrients and produces new chemicals in the food that have not been adequately tested for safety.