Of the tremendous variety of animal species that inhabit the earth, insects are the largest group, accounting for approximately 80 percent. Not only are they Mother Nature’s best-adapted group, they also play a large role in our ecosystem’s makeup. Learn about the characteristics of arthropods, insects’ evolution and their characteristics, and insects and ecosystems. You will be amazed by how important and impressive these tiny creatures are.

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

Insects: Introduction (2:21); --Evolutionary Success (3:04); -- Insects and Ecosystems (3:13); -- Organs of the Senses (1:33); -- Insects: Summary (1:19); -- Credits: Insects (0:47); .