This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..