Chapter 5 Objectives

• Define the biosphere and describe its interrelationships with the lithosphere, atmosphere, and hydrosphere.
• Outline the factors that define and govern populations, habitats, and communities.
• Describe the feeding levels and flow of energy through food chains and webs.
• Identify the stages of primary and secondary ecological succession.
• Diagram the photosynthetic reaction.
• Characterize aquatic, grassland, forest, desert, and tundra biomes.
• Discuss the processes and results of evolution and extinction.