These are some really great resources for the science classes at San Marcos High School:

Environmental Science

• This is a new(ish) search engine that is geared toward environmental issues.

Chemistry

• Periodic Table
  • Here's a link to the periodic table
  • WebElements 
  • Chemical Elements.com
  • Los Alamos Periodic Table
  • FUN "The Elements"

Biology

• Evolution Sites
  • Geologic Timeline
  • Evolution
  • Lines of evidence
  • Charles Darwin (PBS video)
  • Adaptation
  • Natural Selection
  • Extinction (PBS video)

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