toxic

The toxic air pollution and recurrent winter smog in Indian capital Delhi and other parts of northern India frequently makes headlines, becoming a matter of public concern, political debate and legal censure.

However, the chemical solution contains toxic and environmentally hazardous substances.

A coalition of 68 nations had also pushed for a phaseout of toxic chemicals in the material.

If the wells weren't properly plugged, they can potentially leak oil and chemicals into nearby water sources or send toxic substances like benzene and hydrogen sulfide into the air.

An analysis of fungi collected from peat bogs has identified several species that produce substances toxic to the bacterium that causes the human disease tuberculosis.