Pesticides and Eggshell Thinning.

Emerging ecologists need a full understanding of life, from the inner workings of a cell to the complex relationships among organisms. This examination is meant to assess high schoolers after an entire year course on the living...

Would you believe that your digestive system stretches to five times your height?! Help your pupils to understand this relationship as they work through the laboratory exercise. The first instructional activity of a 12-part series is a...

When nature calls, you need to answer. Physiology learners discover that it is a just your body's way of regulating pressure and water content. Along with osmoregulation, they also examine thermoregulation, two vital processes with which...

Environmental science enthusiasts show what they know at the end of the year by taking this full-fledged final exam. They answer multiple choice, graph interpretation, and essay analysys questions, 73 of them in all. Topics range from...

Earth science explorers design an experiment to demonstrate that the albedo of a surface affects its temperature. They test to find out if moisture on the surface affects temperature. They discover whether or not concrete or asphalt heat...

Beginning with how different animals excrete waste, this short video moves on to the human excretory system from the kidneys, to capillaries, to the loop of Henle, to the excretion out of the body. 

Statistically speaking, it is more than possible that extraterrestrial life exists in our solar system. An engaging short video examines moons and planets that might support life, although not just life as we know it.

Document provides information on the causes and nature of cancer and particularly the substances in the environment that are known to cause or may cause cancer in humans such as tobacco, ultraviolet radiation, pesticides, and metals.

How do turtle shells form? Scholars explore the evolution of turtle shells and learn about how they form from many different bones before relating the process to cell differentiation in an organism. Pupils also look at different turtle...

If you do not mind wading through unrelated headings (This is not for a physics or STEM course, as it states.) and content (The lesson opens with an article about neurology, not halophiles.), then you will find a valuable resource on...