Across
- 2. Network of food chains within an ecosystem.
- 4. Eat plants/primary consumers.
- 6. Living or once living.
- 7. Make their own food through photosynthesis.
- 9. Nonliving
- 10. Consume other animals.
- 11. Rocks, sand, water, oxygen.
Down
- 1. Shows the amount of energy that moves from one feeding level to the next.
- 3. The number of different organisms that live in an ecosystem.
- 5. Grass, oak tree, moss.
- 8. maple tree, cougar, mushroom.