1 “... chemicals in any segment of the environment, as well as toxicological implications...”

2 “... of xenobiotics, in any segment of the environment, as well as toxicological implications...”

3 “... of these and other foreign chemicals in any segment of the environment, as well as toxicological implications...”

4 “... of these and other foreign chemicals in any segment of the environment, as well as toxicological implications...”

5 “... of these and other foreign chemicals in any segment of the environment, as well as toxicological implications...”

6 “... of these and other foreign chemicals in any segment of the environment, as well as toxicological implications...”

7 “... of these and other foreign chemicals in any segment of the environment, as well as toxicological implications...”