The police used tear gas against the demonstrators.

Fergus is my best friend.

This factory has significantly reduced its carbon dioxide emissions.

Fougasse is one of my favorite types of bread.

We need to replace the gasket of this engine.

He lost consciousness due to the effects of nerve gas.

The air in this area is greatly affected by pollutants emitted from factories.

This polluted water could potentially harm our health.

Soil pollution in this area has become serious due to years of industrial activity.

Chemical pollution has a serious impact on the health of the Earth.