Correlates with standards: (AZ)
4.1.2-3 Describe the structure and function of plant and animal cells.
4.1.4 Differentiate between plant and animal cells.
4.3.1 Explain the major source of energy for most ecosystems.
4.1.1 Explain the importance of water to organisms.
4.3.2 Describe how water quality, climate, population density, and smog affect the quality of life.
4.1.5 Explain the hierarchy of cells, tissues, organs and systems.
4.1.6 Relate structures of living organisms to functions.
4.1.7 Describe how the various systems work together to perform a vital function