Students will exam the different perspectives on why the gray wolf was reintroduced into many western states during the 1980s, the success of the reintroduction, and the benefits and problems from the recovery of the gray wolf...

Learn what happens to different populations of organisms as their ecosystem changes. Design your own experiment and make your own guesses with what the result will be with this virtual ecosystem. Also experiment with producer/consumer...

Students explore the effects that ecosystem disruptions can have on animal populations. They learn about the disruptions that have driven three species-the Madagascar fish eagle, the Iberian lynx, and the rowi kiwi, to the brink of...

Did you ever want to be a hawk? In this virtual ecosystem, students will take on the role of a hawk and try to catch rabbits on a snowy field. Students will see which rabbits have adaptations that allow them to blend into the environment...

A unit for students to look at the economic opportunities associated with a river. Students will explore the Grand River Revitalization & Restoration Project. In this unit, they will also learn about two species impacted by the...

"Changing the Ecosystem: Q & A" is a one page, nonfiction, reading passage about how the loss of the prairie to farming and population growth impacts the ecosystem. It is followed by questions which require students to provide...

Population in areas is most often determined by environmental factors. This video and the test will help ensure understanding of the trends of population growth with scientific evidence.

Students learn about how climate change is affecting the Arctic ecosystem, and then investigate how this change is impacting polar bear populations. Students analyze maps of Arctic sea ice, temperature graphs, and polar bear population...

Students will conduct a field investigation to learn about the environment. They will observe biotic and abiotic factors of an ecosystem. Students can use the CBL 2 and a temperature probe to collect data and a graphing calculator to...

Students learn about Abiotic and Biotic Factors and how they affect the ecosystem in which an animal might live in.

Read and understand the concept of ecological population counts and sizes. Hover the mouse over questions to reveal the answers as you sharpen your skills.

A paper from the Population Connection that outlines the consequences to the environment if humans continue on the path of overpopulation.

Learners build a model ecosystem to simulate the life and limiting factors of the Terrapin turtle.

Experiment with variations in grass to see which size grows best with different amounts of water. Understand that grass that can live in different levels and change to its environment has a better chance of surviving. Also, experiment...

Build a dam in the middle of an ecosystem and observe how the population of plants and animals adapt to their new environment with this science simulation. Learn how the populations adapt to survive in their new habitat. Then remove the...

This lesson will describe the properties of populations. It is 2 of 8 in the series titled "Population."

This lesson will describe the properties of populations. It is 3 of 8 in the series titled "Population."

This lesson will describe the properties of populations. It is 4 of 8 in the series titled "Population."

In this in-depth jigsaw activity, students investigate the role bald eagles play in the ecosystem, why they were listed as endangered, the effects of DDT on eagles, and the effects of lead on eagles. Furthermore, students will then graph...

The abundance and distribution of organisms in an ecosystem is determined by biotic and abiotic factors. Animals and plants have adaptations to allow them to compete for resources.

Go on a mission to Costa Rica and Mexico, and explore the state of tropical rain forest ecosystems by examining Costa Rican caterpillars. Learn what the change in this animal's population means for the rest of the ecosystem.

[Free Registration/Login Required] Students will get an introduction to ecosystems. They will be able to distinguish nonliving and living thins in a habitat.

The computer program's simulation of a Sonoran desert community should ultimately strengthen the student's comprehension of what is required for a natural ecosystem to sustain itself (remain in balance). This computer simulation program...

Build your own ecosystem, and explore the effects of these interrelationships.