The diagram below is an example of part of a food web in a Scottish loch. If one species is lost from a food web all the others are affected. Other populations will also be affected. For instance, the ...

According to a recent poll by Gallup.com, 59% of Americans believe that the amount they pay in income taxes is fair. The survey was based on a sample 1017 American adults. If the pollsters talked to ...

Abiotic close abioticNon-living elements of an ecosystem, such as climate, temperature, water, and soil type. factors are non-living environmental factors that can affect the organisms in ecosystems.