enviornmentalsciencenotes

enviornmentalsciencenotes - Class Notes 09:12:00 ← Why is...

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Unformatted text preview: Class Notes 27/08/2007 09:12:00 ← Why is environmental science important • Sustainability • Human pop issues • Challenges and complexity ← “hot” environmental issues • Endocrine disrupters • Commercial fisheries • Declining bird populations • Ozone depletion • Global warming ← Theory is proven through experimentation over and over ← Law is stronger as no valid counter argument has been proposed in some time ← Science cannot shed light on all issues ← No proof ← Matter and Atomic Structure • Chemical structure and bio function • Elements > molecules > compound • Structure of an atom • Radioactive isotopes • Electron arrangement • Chemical element – can’t be broken down by physical or chemical means o Naturally occurring o Human-made • Chemical formula – what number of each type of atom is present in a molecule (H2O) • Structural formula – see through some type of model which atoms are bonded to which (HOH) • Atom o Electron First for electron orbitals o Proton o Neutron • Isotopes – dif number of neutrons from normal element o Stable o Unstable radioactive Chapters 1 and 4 notes 27/08/2007 09:12:00 ← Website for environmental science Webct41.gmu.edu ← Book notes ← Vocab • Environment – includes all biotic and abiotic factors with which we interact • Biotic factors- living or once living factors in the environment • Abiotic factors- nonliving things • Environmental science- study of how the natural world works • Natural Resources- various substances and energy sources we use to survive • Renewable Natural Resources- resources that are virtually unlimited and are replenished over a short period of time • Nonrenewable natural resources- resources that are formed much more slowly and have a much more finite supply • Agricultural revolution- time where humans farmed • Industrial revolution- huge expansion of industry coupled with huge...
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enviornmentalsciencenotes - Class Notes 09:12:00 ← Why is...

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