Food Web! 'Cause I'm A Spider!

Primary producers (organisms that make their own food from sunlight and/or chemical energy from deep sea vents) are the base of every food chain - these organisms are called autotrophs.
Primary consumers are animals that eat primary producers; they are also called herbivores (plant-eaters).
Secondary consumers eat primary consumers. They are carnivores (meat-eaters) and omnivores (animals that eat both animals and plants).
Tertiary consumers eat secondary consumers.
Quaternary consumers eat tertiary consumers.
Food chains "end" with top predators, animals that have little or no natural enemies.
An example of a Primary producer would be a tree or grass because they create their own food from energy.  Then primary consumers, such as a deer, are herbivores (plant-eaters); And eat primary producers.  Secondary consumers, such as a fox, or either carnivores or omnivores (meat-eaters or meat and plant eaters); And eat the primary consumers.  The tertiary consumers, such as a Golden eagle, eat the Secondary consumers.  And the Quaternary, or top predator, eat almost anything with little or no natural enemies (for example a Brown bear or a Lion).


reference:  http://www.enchantedlearning.com/subjects/foodchain/