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 benifits
Down
- 1. organisms that can make their food from simple non-living substances.
- 2. organisms that directly or indirectly depend on green plants for nutrition
- 3. organisms that live in or on other live organisms and derive their food from them