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Scientific methods of investigation can be experimental, descriptive, or comparative.

Students should know that some questions are outside the realm of science because they deal with phenomena that are not scientifically testable. Scientific inquiry is the planned and deliberate investigation of the natural world.

Implementation of Texas Essential Knowledge and Skills for Science, High School, Beginning with School Year 2010-2011.

The provisions of 112.32-112.39 of this subchapter shall be implemented by school districts beginning with the 2010-2011 school year.

Students should be able to distinguish between scientific decision-making methods and ethical and social decisions that involve the application of scientific information. A system is a collection of cycles, structures, and processes that interact.

All systems have basic properties that can be described in terms of space, time, energy, and matter.