1. harmful things that make our air dirty, noisy, or unhealthy
pollution
harmful things that make our air dirty, noisy, or unhealthy

2. oxygen
gas in the air we need for breathing

3. garbage
things that are thrown away— often discarded in landfills

4. environment
soil, air, and water around us that affect living things

5. Earth Day
Day set aside to focus on taking care of the earth

6. landfill
low area that is filled in (often with garbage)

7. recycle
use again after processing

8. reuse
use again

9. reduce
use less

10. compost
to reuse organic material as fertilizer

11. wildlife
animals living in the wild