What makes a frog living and a robot nonliving? Use observable traits to distinguish between living and nonliving things!

An energy pyramid is a simple way to graphically show how energy flows in an ecological community; somewhat similar to the food pyramid.

Explore grasslands and their fauna in this thought-provoking worksheet!

Bundle up and discover the animals of the tundra in this second-grade life science worksheet!

Deserts might seem inhospitable to life, but there are actually plenty of animals that can live there!

Stroll through the flora of a temperate deciduous forest in this third-grade worksheet!