• Biomass: The total mass of the living organisms in a certain area.

• Food Chain: a ‘Chain’ or series of living things in which each member depends for food, and therefore energy, on the member below in it the Chain. The chain begins with a producer (plant life) and ends with a top carnivore.

• Producer: An organism (usually a green plant) which can produce nutrient tissue (food) from simple chemicals, often by photosynthesis.

• consumer: An organism (usually an animal) which eats producers or other consumers.

• Herbivore: An animal which eats grass or other plant life. A herbivore is usually a primary consumer.

• Carnivore: An animal (or, very rarely, a plant) which eats mainly animals.

• Predator: An animal which kills and eats another animal. The other animal is the prey of the other predator.

• Prey: An animal hunted or caught for food.

• Decomposer: An organism, such as a fungus or bacterium, which breaks down (decomposes) dead tissue (plants, animals, etc.) into chemicals.

Energy Source

Producer

Herbivore primary Consumer

Predator prey omnivore secondary consumer

Predator carnivore Tertiary consumer

Decomposer

Lion: Predator

Giraffe: Prey

Plants: Producer

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