From organisms to ecosystems
Explaining changes over time
Explaining geographic similarities and differences
Evolution by natural selection
Inheritance and evolution
Genetic engineering and biotechnology
From cells to organ systems
Using and distributing materials in the body
Shielding and supporting the body
Sending chemical and electrical signals in the body
Creating a new individual
The beginnings of classification
6. Humans in the biosphere
Human effects on natural resources
Science as a human endeavor
The future of the biosphere
Appendix 1. Investigating biology on the Internet
Appendix 2. Units of measurement : metric system and English system
Appendix 3. Landmarks in biology
