martes, 16 de noviembre de 2010

Food Web

A food web is a diagram that explains haw a bunch of animals survive by eating each other. An animal that is at the top of a food web is a predator that eats the animals below them. The animals or plants below are prey of the predators. Some animal have a lot of different animals to eat while others have much more less options.

Acid rain can affect a food web really easy. If one specie dies then the whole food web dies. For example: if phytoplankton dies because of the acid then trouts, dragonflies and mayflies die because they depend on the phytoplankton for food, and eventually they die. with this animals dead other animals that depend of this animals like fish, birds, frogs and salamanders eventually die. This process continues up the entire food web. So acid rain may not affect only one specie, it affects all the other species including us.

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