Front

Environmental issue: Acid rain

Back

Acid rain

Front

If a product decays naturally, it is ____.

Back

biodegradable

Front

A number and variety of plant and animal species in a particular area.

Back

Biodiversity

Front

What is this?

Back

Global warming

Front

These are ____ energies.

Back

Non-renewable

Front

Protects from dangerous UV rays:

Back

Ozone

Front

Minerals, woods, coal, water, etc. that can be used by people.

Back

resources

Front

Things thrown away after use are called ____ products.

Back

disposable

Front

CO₂, N₂O, CH₄, CFC, CO are...

Back

greenhouse gases

Front

"Smog" refers to...

Back

Smoke + fog