1. Green pigment that allows plants to make their own food 2. Organisms that feed on plants only 3. Organisms that feed on flesh only 4. Organisms that feed on both plants and flesh 5. Organisms that can make their own food through photosynthesis, 6. Interactions which one received benefit and the other is harmed 7. Interactions which one received benefit without harming the other 8. Interactions happens when organisms compete with others for food and shelter. 9. Interactions which happens between predator and prey. 10. Interactions which both organisms are benefited.