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4. Interdependence
A predator is a species which feed on another species, the prey, usually killing them
Predator-prey relationships include algae feeding on bacteria, through herbivores feeding on plant seeds, to carnivores feeding on herbivores. The difference between a predator and a parasite is that a parasite feeds on a very few hosts during its life-time, and does not normally kill the hosts, whereas a predator eats and typically kills many prey organisms. Grazers feed on parts of many prey individuals, but do not usually kill them. In most situations the predator is larger than its prey and because of the energy loss between trophic levels, is considerably less numerous.
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| Komodo dragons | Komodo dragons |
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| Tarantula | Ants consuming fruit |
What is a predator? What is prey?