Biological evolution accounts for the diversity of species developed through gradual processes over many generations. Evidence from rocks allows us to understand the evolution of life on Earth. Rocks are often found in layers with the oldest generally on the bottom. The anatomy and physiology of plants and animals illustrate the complementary nature of structure and function. The failure of any part can affect the entire system.
Physical principles underlie biological structures and functions.
Investigation and Experimentation 7. Scientific progress is made by asking meaningful questions and conducting careful investigations. As a basis for understanding this concept, and to address the content the other three strands, students should develop their own questions and perform investigations.