He is an expert in aerodynamics.

By doing wall squats for 10 minutes every day, you can improve your leg strength.

He is a person who can't read the room, so he struggles to match the atmosphere of the place.

The emotional atmosphere of this room is very calming.

This polluted water could potentially harm our health.

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

Air pollution is having a serious impact on the health of the planet.

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

Marine pollution is a global issue, and all countries should cooperate to find a solution.

We should seriously address the issue of water pollution.