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The Clean Water Act (CWA) is the primary federal law in the United States governing water pollution.
In biology, cloning is the process of producing similar populations of genetically identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually.
Food safety is a scientific discipline describing handling, preparation, and storage of food in ways that prevent foodborne illness.
Global dimming is the gradual reduction in the amount of global direct irradiance at the Earth's surface that was observed for several decades after the start of systematic measurements in the 1950s.
Scientific literacy encompasses written, numerical, and digital literacy as they pertain to understanding science, its methodology, observations, and theories.
Space is the boundless three-dimensional extent in which objects and events have relative position and direction.
Stem cells are undifferentiated biological cells that can differentiate into specialized cells and can divide (through mitosis) to produce more stem cells.