Across
- 2. the zone where all life on Earth is occupied
- 4. a chemical element which has two main forms (diamond and graphite)
- 5. a group of atoms bonded together that can take part in a chemical reaction
- 10. the process where energy moves from one location or object to another
- 11. relating to water
- 12. a person or animal that eats both plants and animals
Down
- 1. organisms that break down organic material
- 3. the capacity to withstand or recover from difficulties
- 6. of, on, or relating to Earth
- 7. organisms that get the energy they need from the consumption of other organisms
- 8. organisms that produce organic compounds from substances like water and carbon dioxide
- 9. a colorless, odorless, unreactive gas that form 78% of the Earth's atmosphere
- 11. the basic unit of a chemical element