Across
- 3. to be a danger to something
- 5. the increase in temperature of the earth’s atmosphere that is caused by the increase of particular gases
- 7. you make sure sth doesn't happen
- 8. An animal or plant species in danger of
- 9. to add dirty or harmful substances to land, air, water, etc
Down
- 1. the problem of the slow steady rise in temperature of the earth’s atmosphere, caused by an increase of
- 2. to use again
- 4. period of dry weather
- 6. something that gets bigger