Life is organized on many structural levels. Each level of biological organization has emergent properties. Cells are an organism s basic units of structure and function. Structure and function are correlated at all levels of life. A feeling for the organism enriches the study of life.
Organisms are open systems that interact continually with their environments.
Diversity and unity are the dual faces of life on earth. The history of life is a chronicle of processes of transformation. Science is a process of inquiry involving hypothesis and deduction. Biology is a multidiscipinary adventure.