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Earth ScienceThe Hydrologic Cycle
Powered by the sun, water constantly cycles through the Earth and its atmosphere. This module...
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ChemistryStates of Matter
There are many states of matter beyond solids, liquids, and gases, including plasmas, condensates, superfluids,...
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Process of ScienceStatistics in Science
Scientific research rarely leads to absolute certainty. There is some degree of uncertainty in all...
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