Or they may be exposed to harmful substances at work.

If that were the case, the use of harmful substances would drop.

It may also exchange with a less harmful substance at this site.

Thus action to limit risk must focus, in the main, on the most harmful substances.

Introduction of harmful substances into the environment by human action or natural processes.

Equally important, the discrimination against harmful substances doesn't work in this case.

It likely evolved as a defense mechanism against harmful substances.

See our guide on how to manage harmful substances safely.

But despite the demographic changes, the use of some potentially harmful substances has continued to rise.

"products often contain harmful substances that are damaging to human health and the environment."

And major league players have some responsibility not to encourage teenagers to use a harmful substance.

Exposure to protective or harmful substances soon after birth may be particularly critical.

So when it's added to harmful substances, it makes them unpalatable.

Testing did not necessarily involve exposure to a harmful substance.

Practice how to respond when a harmful substance is offered, such as simply stating "No, thanks" and moving on to another subject.

It helps accelerate and eliminate harmful substances found in the body.

The first step to managing harmful substances safely is to conduct a risk assessment.

In Flanders, things have now got to such a pass that harmful substances can be found everywhere.

There are regular reports of excessive mercury and other harmful substances in fish.

Many goods are not dangerous themselves, but contain harmful substances which could cause harm to the environment, people or both.

Some cosmetics contain harmful substances; ask your doctor for alternatives.

We must put safety first and make sure that harmful substances do not enter the food chain unseen by the back door.

There is a proposal before the Commission to couple vehicle tax to the emission of harmful substances.

This process has the advantage that it avoids the use of potentially harmful substances.

Many women believe that the placenta acts as a shield against harmful substances.