Across
- 5. organisms that live on dead plants and animals and derive their food from them.
- 7. it maintains proper balance between oxygen and carbon dioxide in the atmosphere
Down
- 1. the mode of nutrition where two different organisms work together for their mutual benefit
- 2. NUTRITION is nutrition in which organisms can prepare their own food.
- 3. organisms that live in or on other living organisms and derive their food from them.
- 4. the mode of taking food by an organism and it's utillization in the body
- 6. are small openings on the under-side of the leaves