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Scientists and engineers use mathematics and quantitative thinking to representing variables, behaviors, and their relationships. Mathematics is used to create models and simulations; statistically analyze data; and recognize, communicate, and look for relationships with other variables.

The Biosphere includes all life on Earth including life living on the Earth's Geosphere and in Hydrosphere, including humans and all organic matter that has not yet decomposed.  This important sphere distinguishes Earth from all other planets in our solar system as life evolved (and con

Within the science education community, there is a shift in focus from content driven instruction to that of the processes and practices associated with the acquisition of scientific knowledge.