Across
- 2. A substance other than the primary substance that is left over as the result of an industrial or biological process
- 6. A gas found in Earth’s atmosphere, its molecules have one carbon atom & two oxygen atoms – it is a waste product of respiration in living things & acts as a greenhouse gas, trapping energy from the sun in the Earth’s atmosphere
- 8. The act of observing a phenomenon in order to collect data & identify patterns
- 9. Water contaminated by human use
- 11. An amount of a polluting substance that is produced and released into the air
- 12. A framework of foundational services, facilities or systems that sustain a society or organization
- 13. An adjective that describes something related to a city
Down
- 1. The introduction of harmful substances to a natural environment
- 3. The process in which rural areas are developed for human settlement
- 4. The natural environment for a plant or animal to live and grow
- 5. Unlikely to run out, capable of being replaced or restored as quickly as it was used
- 7. The action of clearing forest areas for uses like farming, urbanization, or mining
- 10. A usable stock or supply