Across
- 2. usable energy
- 4. mass of living organisms in a given area
- 6. chemical reaction in the body's cells that change food into energy
- 7. sugars
- 9. environmental factors and interspecies relationship that influence the species
- 11. breaking down glucose to produce ATP(energy)
- 12. carbohydrate that make up plant cell wall
Down
- 1. number of calories burned
- 3. inhaling o2 exhaling co2
- 5. given the most energy
- 8. removal of undigested food material
- 10. contains carbon and hydrogen