In 1910, farmers earned 40 cents for every dollar in sales. Today, they only earn a penny from each dollar, the result of a drastic consolidation of farm ownership centered on a few big commodity ...

A food web is a detailed interconnecting diagram that shows the overall food relationships between organisms in a particular environment. The simplest explanation is that food webs are "who eats whom" ...

If you want to understand an ecosystem, look at what the species within it eat. In studying food webs -- how animals and plants in a community are connected through their dietary preferences -- ...