Along came a spider, who sat down beside her. She screamed, but RJ wouldn't smash it because spiders are a limiting factor for other insects in an ecosystem. In this video, other common limiting factors for populations are listed....

Three types of symbiosis are explained: parasitism, commensalism, and mutualism. This is done with colorful animation and lively dialogue in a straightforward and easy-to-follow manner. Have your ecology class watch this at home and then...

Why not walk in the footsteps of Teddy Roosevelt and become a conservationist? After discussing issues and reasons for animal extinction, the class creates their own conservation plans. Each small group is given mock data regarding a...