Ask a Biologist
It’s a Plankton Eat Plankton World
For as small as they are, plankton sure play an enormous role in maintaining marine ecosystems. Dive into an investigation of these tiny organisms with a hands-on life science activity in which children cut out pictures of sea animals...
Wildwood Trust
Habitats
The circle of life is all around us, from the black bears in the nearby mountains to the pile of dead leaves in the backyard. Encourage young scientists to take a critical look at the world around them with a set of lessons about natural...
US Environmental Protection Agency
Non-Point Source Pollution
Investigate the different types of pollution that storm drain runoff carries into oceans, lakes, rivers, and streams with this class demonstration. Using an aquarium and an assortment of everyday items that contaminants like motor oil,...