food chain

A food chain is a linear network of links in a food web starting from producer organisms (such as grass or trees which use radiation from the Sun to make their food) and ending at apex predator species (like grizzly bears or killer whales), detritivores (like earthworms or woodlice), or decomposer species (such as fungi or bacteria). A food chain also shows how the organisms are related with each other by the food they eat. Each level of a food chain represents a different trophic level. A food chain differs from a food web, because the complex network of different animals' feeding relations are aggregated and the chain only follows a direct, linear pathway of one animal at a time. Natural interconnections between food chains make it a food web. A common metric used to quantify food web trophic structure is food chain length. In its simplest form, the length of a chain is the number of links between a trophic consumer and the base of the web and the mean chain length of an entire web is the arithmetic average of the lengths of all chains in a food web. Food chains were first introduced by the African-Arab scientist and philosopher Al-Jahiz in the 9th century and later popularized in a book published in 1927 by Charles Elton, which also introduced the food web concept. Wikipedia
I fucking love science Sun, 10/15/2017 - 01:07

In A Colony of Nearly 40,000 Breeding Penguins, Only Two Chicks Survived This Year
It was a bad year for penguins :(
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New York Daily News Sat, 10/14/2017 - 07:01

40,000 penguin chicks starved to death in Antarctica this year
Only two Adélie penguin chicks out of a colony of 40,000 survived.
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The Nation Magazine Fri, 10/13/2017 - 16:15

Robert Mueller’s End Game: Is Trump’s Impeachment a Possibility?
It’s time to start giving serious thought to how this crisis will end.
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The Guardian Fri, 10/13/2017 - 12:30

Penguin disaster as just two chicks survive from colony of 40,000
"This year’s event has been attributed to an unusually large amount of sea ice. Overall, Antarctica has had a record low amount of summer sea ice, but the area around the colony has been an exception."
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The San Diego Union-Tribune Fri, 10/13/2017 - 02:31

Has anyone fallen faster than Harvey Weinstein?
After decades as a Hollywood elite, Harvey Weinstein's fall from grace was fast and furious.
View more 13 likes - 4 shares - 5 comments Thu, 10/12/2017 - 20:30

Domino’s future has nothing to do with pizza
Customers might be furious over them dropping Coca-Cola but this pizza giant insists it has plenty of exciting things up its sleeve.
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