Tenth graders examine how energy is lost through different trophic levels.  In this trophism lesson students construct a food web and view a video. 

Middle schoolers create food webs for two different ocean communities. They are given cards showing organisms from the surface of the ocean. They arrange them in order of who eats whom. After this class activity, students create a food...

In 2015, Peter Cook found that sea lions with high levels of exposure to toxins suffered permanent brain damage if they survived at all. Scholars learn about the accumulation of toxins at various levels of the food chain. Using...

For this ecosystem worksheet, students use a diagram of an ocean-based food web to complete 5 short answer questions about the energy flow through this ecosystem.