Ecosystems

From tiny organisms to entire biomes, young scientists examine the interdependent relationships tying all living and non-living things together with this collection of ecology resources.

The tropics contain about 40 percent of the area on Earth. Viewers take a trip to Peru as an entrancing video from a larger biology playlist explores the region. It explains the facts and theories about the biodiversity near the equator....

Jump into the classification of animal and plants cells, through this inviting instructional activity comparing Elodea leaves and Epithelial cells. Middle school learners will create wet mounts, write journal entries that compare...

There are millions of plant and animal species on the planet, but why do we need so many? Follow along with this short video as it explains how biodiversity helps strengthen ecosystems, allowing them to adapt to change so that life...

Peru's coastal ecosystem is only one of the country's amazing features. But travelers don't need passports, expensive plane tickets, or heavy suitcases to examine the biodiversity of coastal Peru. Armed with a field trip log and graphic...

Students study the various species found in and around oceans. They examine the variations in underwater life, determined by ocean depth. Afterward, they create dimensional relief boards of seascapes. In addition, they write a play about...

Students examine the process of photosynthesis; its products and reactants, and the sequence of the process. They diagram the light reactions, record observations of plants, and discuss how difficult it is to measure plant growth as it...

Students explore the Endangered Species Act and the work of scientists who strive to protect species.

Explore the food chains that support Arctic ecosystems. A class discussion on interdependence and the different roles plants and animals play in ecosystems provides students with the knowledge to complete a worksheet asking them to...

Why do most populations remain stable over time? Usually it is a result of either environmental resistance or carrying capacity. Examine some of the factors that help stabilize animal populations, and explore some of the changes that...