Front

It's ...

Back

water pollution

Front

It's a _________

Back

plastic bottle

Front

It's ___________ bin.

Back

recycling

Front

Pollution: ô nhiễm tiếng ồn

Back

noise

Front

nạn phá rừng

Back

deforestation

Front

air p_ll_tion (n): ô nhiễm không khí

Back

o-u

Front

Why forget to __________ the lights when leaving the classroom?

Back

Turn off

Front

Word that doesn't belong: reuse, reduce, repeat, recycle.

Back

repeat

Front

Using ............. bags helps the environment.

Back

Reusable

Front

Fill in the blank: "_____ pollution can cause breathing problems."

Back

Air