Across
- 4. a word for "very often"
- 6. another word for the "contamination" of water or air
- 7. to take unfair advantage of e.g. workers --> to ...
- 8. the concept of keeping ecological balance
Down
- 1. cars needing petrol have a...
- 2. oil and gas are ...
- 3. another word for "trash" or "rubbish"
- 5. your carbon ... shows how much CO2 emissions you cause