Across
- 2. a colorless unstable toxic gas with a pungent odor and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet light. It differs from normal oxygen (O2) in having three atoms in its molecule
- 4. convert (waste) into reusable
- 5. use or expend carelessly, extravagantly, or to no purpose.
- 6. able to be used again or more than once.
- 8. something you put in the trash can
- 9. the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects.
- 10. the planet we live on
- 11. very large expanse of sea, in particular each of the main areas into which the sea is divided geographically.
Down
- 1. the surroundings or conditions in which a person, animal, or plant lives or operates.
- 3. waste water and excrement conveyed in sewers.
- 5. extending or reaching throughout the world.
- 7. an incidental or secondary product made in the manufacture or synthesis of something else.