Far from being a result of mere chance, the shapes and sizes of living creatures are direct responses to their biological conditions. This can explain why related species can look vastly different from each other. Learn more about the slow but continuous transformation the many legions of creatures that inhabit our planet undergo as a result of the laws of physics and chemistry. Exploring eating habits, habitat climate, and environment can help us understand the shape and size of living beings.

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

Size, Shape, and Life: Part 1: Introduction (3:25); --Food and Adaptation (4:41); -- When Size Matters (6:58); -- Copying Nature (3:02); -- Size, Shape, and Life: Part 1: Summary (3:26); -- Credits: Size, Shape, and Life: Part 1 (2:19); .