Chemicals build up in the body and can cause cancer.

Chemicals soon made their way into the river and caused pollution problems.

These chemicals cause inflammation in a part of the body.

Usually, the chemicals are diluted by river water and do not cause serious problems.

Whatever chemicals are causing this, they don't seem to be associated with the stars themselves.

The problem is to decide which chemicals might be causing cancer, and in whom.

If the pack leaks, the chemicals could cause more eye damage.

"We believe that the chemicals cause more problems than the nuisance of mosquitoes."

These chemicals might cause serious side effects such as heart attack, stroke, or seizures.

Can these same chemicals cause the same results in fish or are they resistant to them?