Animal Architects
Living things are affected by their environment and cause changes to their environment. Animals such as, beavers have a very large effect on their environment. Beavers build dams that cause ponds and wetlands to form. The trees that the beavers cut down are harmed and the organisms that lived in the flowing water of the stream must move. Fire ants accidentally brought to the United States on a cargo ship, spread all over the southeastern United States. They are an invasive animal that have wiped out colonies of native harvester ants. Harvester ants were a favorite food of the horned lizard so now there were very few horned lizards.