ENVS 101 - Class Notes - 01.29.08

ENVS 101 - Class Notes - 01.29.08 - ENVS 101: Class Notes...

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ENVS 101: Class Notes Class 4 01/29/08 Last class quiz: 1. Of 3 chemical bond types, which one is table salt, NaCl? Ionic? 2. Are protons +, -, or neutral? + 3. Of Ions or Isotopes, which carry a charge? Ions 4. Entropy measures: Randomness 5. Which law of thermodynamics (1 or 2) measures Microbial Decompositions Types (Pg. 47) Aerobic o Carb + O2   energy + CO2 + H2O Anaerobic o Not as efficient o Acids and alcohols accumulate as end products o Carb   energy + CO2 + acids Decomposition Limits “Bog Man” of Denmark + 1,000 years Oxygen o For aerobes Water o Too little o Too much Acids and alcohols o Preservatives “Otzi the Iceman” of Otztal Alps  o About 3,300 B.C. Cold temperatures Land area used to provide resources to sustain a person is called their 1. GNP 2. Land capacity 3. Ecological footprint My Answer: Ecological Footprint Correct Answer: Ecological Footprint Human NPP Appropriation Global NPP o 27% used, altered or degraded By humans
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Terrestrial NPP o 40% used, altered or degraded By humans NPP =  Ecological Footprint (Same slide as last class) US, Netherlands, India Sustainable Ecosystems Keys (Page 20) Energy source: solar energy Recycling nutrients Biodiversity o Efficiency Population control o Balance How easy? – Biosphere 2 Biosphere 2: Lesson in Humility? (Page 424) Designed for sustainability o 1991-1993 o 8 scientists o About 3 acres o 19 of 25 animal species died o Pollinating bees died o Gas exchange problem Increased CO2 Had to pump in O2 o Currently a tourist attraction Questions? Earth Environments Earth Environments Density Layers Lithosphere o Core > 11gm/cm3 o o Crust Hydrosphere o About 1 gm/cm3 Atmosphere o < 1gm/cm3
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Quiz 2:  How far is 10 kilometers (I.E. the thckness of earth’s crust)? 1. .8 mile 2. 1.6 miles 3. 3 miles 4. 6 miles My answer: 3 Correct answer: 6 Lithosphere (Page 42, 263) Composed of  o Minerals Naturally occurring, inorganic solids o Rocks Mixtures of minerals Minerals Chemical elements and compounds o About 90% are ionic compounds o The rest of them are largely elements NOTE: Biosphere: mostly covalent compounds   Page 266 Minerals Form by Crystallization
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This note was uploaded on 04/11/2008 for the course ENVS 101 taught by Professor Lord during the Spring '08 term at SUNY Oneonta.

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ENVS 101 - Class Notes - 01.29.08 - ENVS 101: Class Notes...

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