Food chains, also called food webs, food networks and/or trophic networks, describe the feeding relationships between species to another within an ecosystem. Organisms are connected to the organisms they consume by arrows representing the direction of biomass transfer. Typically a food chain or food web refers to a graph where only connections are recorded, and a food network or ecosystem network refers to a network where the connections are given weights representing the quantity of nutrients or energy being transferred.

According to the Chinese calendar, the Year of the Rat begins tomorrow. But in Vietnam it may have started sooner: Unexpected changes in the country's food chain and diet have sparked a rodent-eating bonanza.

CHICAGO (AdAge.com) -- During an earnings conference call today with Wendy's International, analysts didn't stick to asking about profits -- they also prodded the fast-food chain about its changing ad direction.

So why is it so urgent from a philanthropic angle to find alternative solutions to oil on which to run our vehicles? Because until we emancipate ourselves we are at the mercy of very evil greedy men at the top of the “food chain” . Greedy bastards who would wreck a planet to make a dollar

Are food chains responsible for making people fat?

The British government has given McDonald's and two other large corporations the power to award the equivalent of advanced high-school qualifications.The government says the fast-food chain had been granted approval to develop courses and set exams up to the standard of A-levels.