When 50 or more fish chain feed in the bay, something extraordinary happens.

如果一个海湾中存在50甚至更多的链式捕食时，会发生一些不寻常的事。

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As I wrote last month, the discovery of melamine in animal feed means that it has likely spread to other parts of the food chain including meat and eggs.

正如我上月所提到的，在动物饲料中发现三聚氰胺也就意味着三聚氰胺极有可能已扩散进入食物链的其它环节，例如肉类和蛋类中。

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Photo 7 ：Swarms of krill, a cornerstone of the entire Antarctic food chain, feed on phytoplankton that grows on the underside of sea ice.

图7： 成群的磷虾是整个南极动物食物链的基础。 它们以浮游生物为食，生长在海冰的上层。

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Redfish will eat that and feed on it. Sheephead,speckled trout, it is part of the food chain."

VOA: standard.2010.05.04

These statistics demonstrate both the complexity of the supply chain from feed farm to table, and illustrate the importance of sustainability in the American food production industry.

FORBES: Impact Investing in Sustainable Agriculture for a New Economy

The volume of cottonseed garbage during the 1800s became so problematic that a number of states passed laws to regulate its disposal.16 But while the bolls and leaves were still trash, in the early 1900s the seed began to move up the value chain to be used as fertilizer and animal feed.

NPR: Texas Cotton: 'Farmer Profits at Every Step'

The grain is one of the key starting links in the country's food chain, used to make cooking oil, tofu products and in feed for the burgeoning pig industry.

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