| Find out if they know why water changes colour, and if they are aware that water can carry away valuable topsoil and transport toxics. |
| Some other air toxics are metals or compounds of metals for example, mercury, arsenic, and cadmium. |
| Air toxics may be released in sudden and catastrophic accidents rather than steadily and gradually from many sources. |
| In addition, the center's decking was pressure-treated without the use of arsenic or other toxics. |
| The second line of defense against avoidable carcinogenic exposures is the reduction or phase-out of toxics in use. |
| They made diesel engines that they knew would pollute, chugging out tons of toxics that cause everything from respiratory diseases to cancer. |
