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Balance of Matter and Energy Exchange

Explore the delicate balance of matter and energy exchange within the biosphere and space, the significance of solar energy in ecosystem productivity, the rate of biomass production, and the importance of maintaining equilibrium in the biosphere. Discover how life affects the atmosphere, the Gaia Hypothesis, and methods like phytoremediation for preserving natural balance.

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Balance of Matter and Energy Exchange

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  1. Balance of Matter and Energy Exchange 2.3

  2. No significant exchange of matter between biosphere & space • Constant energy input • Amount of solar energy received determines the productivity of an ecosystem

  3. Productivity • The rate at which organisms produce new biomass or energy, measured in • J/m2/a • g/m2/a • Dependent on • # of producers • Rainfall • Heat & light • Available nutrients

  4. Maintaining Equilibrium in the Biosphere • Human – maintains internal conditions within a narrow range (homeostasis) • Earth – must do the same • Gaia Hypothesis • Biosphere acts as an organism, maintaining environmental conditions within certain limits.

  5. The Changing Atmosphere • Life changes concentration of gases in atmosphere • Stromatolites (free oxygen increases due to photosynthetic activity) • Plants • Animals

  6. Preserving the Natural Balance • Develop new technologies/tools to meet human needs while preserving the natural balance • Eg. Wind-powered turbines used to create electricity

  7. Phytoremediation • The natural ability of plants and microorganisms to degrade/remove contaminants from soil and water • Converts contaminants to less-harmful materials

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