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The brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sense organs, and making ...
In power engineering, a single-line diagram ( SLD ), also sometimes called one-line diagram, is a simplest symbolic representation of an electric power system. [ 1][ 2] A single line in the diagram typically corresponds to more than one physical conductor: in a direct current system the line includes the supply and return paths, in a three ...
The structure of a DNA molecule is essential to its function. A structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. [ 1] Material structures include man-made objects such as buildings and machines and natural objects such as biological organisms, minerals ...
Updated August 11, 2024 at 10:35 PM. PARIS — The U.S. and China each won 40 gold medals in the first Summer Games draw in Olympic history, with the Americans pulling into a tie Sunday with ...
World economy. The world economy or global economy is the economy of all humans in the world, referring to the global economic system, which includes all economic activities conducted both within and between nations, including production, consumption, economic management, work in general, financial transactions and trade of goods and services ...
Primary energy consumption by source (worldwide) from 1965 to 2020 [ 2] World energy supply and consumption refers to the global supply of energy resources and its consumption. The system of global energy supply consists of the energy development, refinement, and trade of energy. Energy supplies may exist in various forms such as raw resources ...
Diagram of an electrical grid (generation system in red, transmission system in blue, distribution system in green) An electrical grid(or electricity network) is an interconnected network for electricity deliveryfrom producers to consumers. Electrical grids consist of power stations, electrical substationsto step voltageup or down, electric ...
The states and territories included in the United States Census Bureau 's statistics for the United States population, ethnicity, and most other categories include the 50 states and Washington, D.C. Separate statistics are maintained for the five permanently inhabited territories of the United States: Puerto Rico, Guam, the U.S. Virgin Islands ...