Wednesday, December 2, 2009

Trophic Levels

What is a trophic level Diagram?
A trophic level refers to the organisms position in the food chain. Autotrophs are at the base. Organisms that eat autotrophs are called herbivores or primary consumers. An organism that eats herbivores is a carnivore and a secondary consumer. A carnivore which eats a carnivore which eats a herbivore is a tertiary consumer.
Level 1: Sea Otter
Level 2:
Fish
Starfish
Shore Birds
Crabs
Level 3:Sea Urchins
Periwinkle Snail
Mollusks
Limpets
Mussels
Shrimp
Level 4.Large Seaweeds (Algae)
Kelp:(Alaria, Laminara)
Pyrifera
Plankton


What is the difference between Abiotic and Biotic Factors?
Biotic factors are things that are alive or have lived.
Abiotic factors are things that are not alive or have never lived.

1 comment:

  1. if this document were in the shape of a penis, then i would suck it

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