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D. Energy locked up in fossilized carbon compounds are called fuels. E. What element makes up 78% of the atmosphere, yet is relatively unavailable to living organisms? F. All nitrogen in living systems comes from bacteria able to use atmospheric N2​ called " fixers". G. Human activity can release nitrogen into the environment by two primary means: 1. H. The process whereby nutrient and fertilizer runoff causes the overgrowth of algae in bodies of water is called I. is often the limiting nutrient in aquatic, particularly freshwater, ecosystems. J. A is an area in lakes and oceans near the mouths of rivers where large areas are periodically depleted of their normal flora and fauna. K. Dead zones are caused by 3 human activities, which are ... 1. 2. L. is part of the amino acid cysteine and involved in the formation of proteins. M. is corrosive rain caused by rainwater falling to the ground through sulfur dioxide gas, turning it into weak sulfuric acid. 20.3 Terrestrial Biomes A. What are earth's 8 major terrestrial biomes? (see figure 20.18 and don't count polar ice and mountains). 1. 2. 3. 5. 6. 7
B. For the Tropical Forest Biome, complete the following: 1. Where it occurs: 2. Climate: 3. Dominant vegetation: 4. Human impacts: 5. Notable species or traits: C. For the Savanna Biome, complete the following: 1. Where it occurs: 2. Climate: 3. Dominant vegetation: 4. Human impacts: 5. Notable species or traits: D. For the Desert Biome, complete the following: 1. Where it occurs: 2. Climate: 3. Dominant vegetation: 4. Human impacts: 5. Notable species or traits: E. For the Chaparral Biome, complete the following: 1. Where it occurs: 2. Climate: 3. Dominant vegetation: 4. Human impacts: 5. Notable species or traits: F. For the Temperate Grassland Biome, complete the following: 1. Where it occurs: 2. Climate: 3. Dominant vegetation: 4. Human impacts: 5. Notable species or traits: G. For the Temperate Forest Biome, complete the following: 1. Where it occurs: 2. Climate: 3. Dominant vegetation: 4. Human impacts: 5. Notable species or traits: