AP® Biology

Introduction Macromolecules are large, complex molecules that form the foundation of life. They are essential … Read more

Understanding how ecosystems change over time is central to success in AP® Biology. Ecosystem disruption … Read more

Introduction Ecological biodiversity covers everything from the smallest bacteria in soil to the largest mammals … Read more

Introduction Community ecology explores how different species interact and form complex networks within a shared … Read more

Population growth fascinates many scientists and policymakers, especially because of its impact on ecosystems and … Read more

Population ecology examines how groups of organisms change over time, interact with one another, and … Read more

Introduction Energy is an essential force that drives all life on Earth. To understand ecosystems, … Read more

Understanding how organisms respond to their surroundings is key to success in AP® Biology. This … Read more

Understanding how life began on Earth is a key topic in biology. This question has … Read more

Introduction Genetic diversity is vital in biology because it helps populations adapt to changing environments. … Read more