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Food chains and food webs or food networks describe the feeding relationships between species in a biotic community. In other words, they show the transfer of material and energy from one species to another within an ecosystem.

As usually diagrammed, an organism is connected to another organism for which it is a source of food energy and material by an arrow representing the direction of biomass transfer. Organisms are grouped into trophic levels—from the Greek for nourishment, trophikos—based on how many links they are removed from the primary producers. Primary producers, or autotrophs, are species capable of producing complex organic substances (essentially "food") from an energy source and inorganic materials. These organisms are typically photosynthetic plants or algae, but in rares cases, like those organisms forming the base of deep-sea vent food webs, can be chemotrophic. All organisms that eat the autotrophs are called heterotrophs. They get their energy by eating the producers.

Food chain


A food chain describes a single pathway that energy and nutrients may follow in an ecosystem. There is one organism per trophic level, and trophic levels are therefore easily defined. They usually start with a primary producer and end with a top predator. Here is an example of a food chain:

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You r all alone in the woods w/nothing but the shirt on ur back.A bear wants2 eat u.Who's gonna win?Uh, bear! Top of the food chain my ass.
LLGirlBlog (LLgirl) Wed, 04 Nov 2009 11:48:57 -0000
You r all alone in the woods w/nothing but the shirt on ur back.A bear wants2 eat u.Who's gonna win?Uh, bear! Top of the food chain my ass.
@Mikeachim hmm maybe those things you think might end your career will boost you further up the food chain :)
traceyctt (Tracey C) Wed, 04 Nov 2009 11:06:42 -0000
@Mikeachim hmm maybe those things you think might end your career will boost you further up the food chain :)
@YOSushi if i could make sweet sweet loving to any food chain, it would without a doubt be YO!Sushi. For this i do believe i deserve a prize
Ewokie (Eazy-Nastyokie!) Wed, 04 Nov 2009 10:29:28 -0000
@YOSushi if i could make sweet sweet loving to any food chain, it would without a doubt be YO!Sushi. For this i do believe i deserve a prize
SUPPLY CHAIN MANAGER - FOOD MANUFACTURING: BC-Vancouver, SUPPLY CHAIN MANAGER FOOD MANUFACTURING LOCATION: RICH.. http://bit.ly/wbgOt
JobVancouver (Jobs_Vancouver) Wed, 04 Nov 2009 09:12:26 -0000
SUPPLY CHAIN MANAGER - FOOD MANUFACTURING: BC-Vancouver, SUPPLY CHAIN MANAGER FOOD MANUFACTURING LOCATION: RICH.. http://bit.ly/wbgOt
Again, you neglect vegs @gimmemycupcake: @evievie @serwei Meat we have consumed were all murdered but such is the cruelty of the food chain.
serwei (serwei) Wed, 04 Nov 2009 07:42:25 -0000
Again, you neglect vegs @gimmemycupcake: @evievie @serwei Meat we have consumed were all murdered but such is the cruelty of the food chain.
New Blog Post : A Coral Reef Food Chain « SimplyScience Blog http://bit.ly/2gWaYr bsrss
Vanessa_RW (Vanessa) Wed, 04 Nov 2009 07:40:25 -0000
New Blog Post : A Coral Reef Food Chain « SimplyScience Blog http://bit.ly/2gWaYr bsrss

 
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Food Chain - The strategy-board game where cartoon creatures eat each other to survive. Currently available only for MacOS.
Meta Description: [ The game where cartoon creatures eat each other to survive. ]

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