CK-12
Updated: 
Friday, August 19, 2016 - 10:49pm
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Resource
  • MS, HS
Students will learn about minerals, which are naturally occurring, inorganic substances, with definite composition and crystal forms.
The Nature Conservancy
Updated: 
Monday, January 9, 2017 - 3:33pm
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Resource
  • Science
  • 3-5, MS, HS
Sophie Parker is an ecoregional ecologist for The Nature Conservancy, with a background in soil and ecosystem science. Before studying nitrogen...