Across
- 2. interconnected food chains
- 4. first step in a detritus food chain
- 6. flora and fauna
- 7. pyramid of energy is always ______
- 10. ozone depleting agents banned in montreal protocol
- 11. energy levels in a food chain
Down
- 1. first step in a food chain
- 3. protective layer in the stratosphere
- 5. accumulation of substances over successive trophic levels
- 8. interrelation between living and non-living
- 9. non-living components