C. Interdependency Among Organisms 1. Energy flows from the sun. D. Sensing and Responding to Change 1. Organisms can sense changes in the environment and make controlled responses to them. Special cells receive the signals and make appropriate responses.
Homeostasis is the maintenance of a tolerable internal environment.
E. Reproduction 1. Each organism arises through reproduction-the production of offspring by one or more parents. Each organism is part of a reproductive continuum that extends back through countless generations. Variations in hereditary instructions arise through mutations. Many mutations are harmful.