Across
- 4. -organisms that live on dead plants and animals and derive their food from them.
- 5. -the mode of nutrition where two different organisms work together for their mutual benefit.
Down
- 1. -organisms that directly or indirectly depend on green plants for nutrition.
- 2. -organisms that live in or on other living organisms and derive their food from them.
- 3. -organisms that can make their food from simple non-living substances