Explores how animals change over time to survive in their environments through adaptation and natural selection.
A high school biology lesson focused on the specialized structures where capillaries exchange gases, nutrients, and waste products with the body's systems.
Explores how energy and matter flow through ecosystems, focusing on food webs and the importance of biodiversity in a stable environment.
Examines the diverse groups of animals, focusing on how they eat, move, and interact with each other in the wild.