Why can't a polar bear live in the desert? Because the bear's food source lives in the habitat in which it thrives. This is the focus of a video that explains why certain animals live in specific habitats.

What happens to all the waste created in nature? This is the focus of a video that explains how decomposers break down waste to be used as nutrients and turned into energy for other living organisms.

Death is what fungi are all about. By feasting on the deceased remains of almost all organisms on the planet, converting the organic matter back into soil from which new life will spring, they perform perhaps the most vital function in...

Take a step back and see how everything starts and ends with decomposers! [3:18]

This lesson will discuss the interactions of and interdependence among living things. It is 4 of 4 in the series titled "Living Organisms and Their Environment."