Biology, or biological sciences, is the study of life divided into focused subfields that study the structure, function, anatomy, origin, and distribution of living organisms.

Learn the chemical process for respiration. Understand what happens during respiration and the different steps in the respiration equation.

Succession in biology refers to the order in which plants and animals occupy a biological community. As one set of plants and animals dies off, another set of plants and animals establish themselves.

Explore population biology. Learn about the definition of population biology and its techniques for research. See the factors studied by population biologists.

Understand the definition of biological fitness, discover what fitness evolution is, learn what causes biological fitness evolution and explore some examples of biological fitness.

What are the 8 characteristics of life in biology? Learn these properties of life, and see examples of how to classify something as living or non-living.

To define taxonomic classification, it helps to understand the root word taxis, which means order or arrangement in Greek. Taxonomic classification is a method of organizing different species of ...

Learn what active transport is and how it takes place. The different types of active transport are explained and some examples are provided for...

Explore what altruism is in biology. Discover the many examples of altruistic behavior in animals and understand how altruism differs from natural selection.

Learn the fungi definition and different types of fungi in this lesson. Also see what are examples of fungi and fungi characteristics and classification.