Across
- 5. to decay, or to cause something to decay
- 7. the act of sending out gas, heat, light, etc
- 8. relating to the whole world
- 9. to sort and collect rubbish in order to treat it and produce useful materials that can be used again
Down
- 1. the part of the earth's environment where life exists
- 2. the air, water, and land in or on which people, animals, and plants live
- 3. any basic substance that is used in or produced by a reaction involving changes to atoms or molecules
- 4. damage caused to water, air, etc. by harmful substances or waste
- 6. (an event that results in) great harm, damage, or death, or serious difficulty