[Free Registration/Login may be required to access all resource tools.] Covers interactions between organisms.

[Free Registration/Login may be required to access all resource tools.] Ecosystems are organized into several different levels, and they can be studied at any one of the various levels of organization. Learn more about levels of...

Explains what the four spheres of the Earth are and describes how volcanic eruptions affect the different spheres. Also provides a list of events that are examples of interactions.

Make Earth's climate livable by adding the right amount of air, water, and clouds to its surface and atmosphere.

This site provides a comprehensive introduction to the water cycle. Students construct a model to simulate parts of the water cycle. Includes background information, links to standards, lesson plans, and assessment ideas.

This Mixedwood Plains ecozone extends along the Quebec City- Windsor corridor and the densely-populated region of Southern Ontario. This brief, concise description includes a collection of images of the animals and birds native to the...

Examine the effects climate has on the snow and ice covered cryosphere and see live data gathered from the North and South Poles.

[Free Registration/Login may be required to access all resource tools.] How organisms are organized.

Biogeochemical cycles happen when individual elements are recycled over and over in different parts of the Earth. Two examples are the Nitrogen Cycle and Carbon Cycle. Read an explanation of biogeochemical cycles and view a diagram of...

See how ecosystems are organized into several different levels, and an ecosystem can be studied at any one of the various levels of organization.

A webpage giving an overview of ecology. Learn about the biotic and abiotic factors that make up an ecosystem as well as the different levels of ecology.

This PBS documentary provides an overview of the microbial world and offers an exciting glimpse into the field of microbiology. Meet scientists from around the world investigating the microbial world in diverse locations, from a...

Picture of a herbivore, which is a primary consumer in a food chain.

Designed by the Open University and the BBC, this website from Open2.net explores ecosystems. Included is a lengthy discussion on closed ecosystems and their importance to research, as well as a virtual ecosystem, an interactive showcase...

A brief description of the four spheres of the Earth, with an activity where students brainstorm interactions among them.

Get a general grasp on the four spheres, five sub-fields, and two scales of physical geography.

Popular Mechanics covers science and technology developments, including the latest trends, breakthroughs, background, analysis and information in science today. Updated every 20 minutes.

A project where learners research and learn about animals of the rainforest. Students then make mobiles displaying several different animal pictures and facts.

Labeled diagram of zones of vegetation.

In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means 'Origin of the Sky'. Located on the east coast of the Yucatan peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as...

Using the Montreal Biosphere as as an example, ArchKIDecture defines and illustrates the term "geodesic dome."

Scholars explore the Biology concept of microorganisms. The tutorial consists of definitions, examples, and pictures about protozoa.

In this activity, you will identify a problem affecting the world at large, and then predict a vision of the future based on this problem and what you now know about the history of the Universe.

Natural Disasters are typically the result of a variety of factors, which begs the question, are these natural disasters really natural, or are they a result of something man-made? This activity is designed to get you to think about the...