Across
- 4. The conversion of energy from carbohydrates and fats into energy that can be used by cells. In humans, this is breathing
- 6. Creating offspring
- 7. Responding to the environment
Down
- 1. The removal of waste
- 2. Gaining fuel
- 3. Improves the chances of catching food or avoiding capture for both predator and prey
- 5. Getting bigger (into adulthood)