A detailed presentation of the structure and function of different types of cells and of research into developing technologies such as cloning and the use of stem cells.
Discusses plate tectonics, the theory that the surface of the earth is always moving, and the connection of this phenomenon to earthquakes and volcanoes.
Discusses the concepts of time and biological cycles, including the phases of the moon, the internal clocks of plants and animals, seasonal rhythms, and the aging process.
Explains photosynthesis, the process responsible for providing the material and energy for all living things, and discusses such related issues as respiration, the carbon cycle, acid rain, and the greenhouse effect.
Explores the universe and all of its elements, including the Milky Way, our solar system, the stars, and other astronomical bodies, and examines why it is important to continue studying the cosmos.
