Describes the parts of a pig's circulatory system and how its blood circulates. Circulation in a pig fetus is also described as it has differences.

This site from LookD.com provides information about bony fish circulation systems. The article is very brief, only one paragraph in length, but worth checking out on the subject.

Play this interactive hangman game to develop your vocabulary of terms dealing with the heart and circulatory system.

Describes the anatomy of a fish's circulatory system and how the blood circulates in a fish.

Describes the parts of a rat's circulatory system and how the blood circulates in a rat.

Find out how William Harvey was the first known to describe completely the systemic circulation and properties of blood being pumped to the brain and body by the heart.

A student inquiry into properties of the ocean's carbonate buffer system, and how changes in atmospheric carbon dioxide levels may affect ocean pH and biological organisms that depend on calcification.

An extensive page on the circulatory system in general. Scroll down to section 49.3 and you will find a simple comparison of the reptilian system to the other vertebrae systems.

Check out how air circulates around us. Understand the differences between mesoscale and microscale.

The creation of wind systems by Hadley cells is explained at this site.

This video segment describes the basics of the circulatory system: how the heart pumps the blood that carries oxygen and nutrients throughout the body. [3:14]

Imagine our weather if Earth were completely motionless, had a flat dry landscape and an un-tilted axis. This, of course, is not the case; if it were, the weather would be much different. The local weather that impacts our daily lives...

This site contains pictures of hearts that have some type of problem such as narrowing of the arteries and muscle damage from a heart attack. There is also a terrific picture of the coronary artery system that supplies the heart.

This article provides information about peripheral arterial disease and claudication (poor circulation) and related health problems it.

An activity where students take on the roles of parts of the circulatory system, and simulate the transport of nutrients, oxygen, and carbon dioxide through the blood stream.

Teacher directed lesson where students dramatize the flow of blood through the heart.

A labeled diagram of the major veins and arteries in the human body.

Students investigate the properties of water in the ice and liquid phase as it relates to convection in the ocean and density driven circulation, and ultimately the climate.

Join NASA in its study of oceanography and learn about the Earth system, the physical ocean, and life in the ocean. Try out the Giovanni: Earth Data Visualization Tool and access satellite-derived data to enhance the learning experience.

A webpage discussing the global climate systems of El Nino and La Nina. Learn that these weather patterns are "ocean warming" events that are global climate fluctuations that cause major changes in the Pacific atmospheric and ocean...

See a chart of Old English Money that was in circulation in 1945.

Defines and describes the three main types of lung disease: airway diseases, lung tissue diseases, and lung circulation diseases. Also includes links to other common lung diseases that provides facts on causes, symptoms, treatment,...

In this lesson plan site, the students will learn about the circulatory system and perform an experiment where they take their pulse after various activities.

Investigate the evolution of the heart and circulatory system in mammals by studying the anatomy of hearts in other animals. Create models of the hearts of fish, amphibians and mammals.