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The urinary system (also known as renal system) filter blood with the help of kidneys to produce urine, and get rid of waste. See also. List of distinct cell types in the adult human body; List of organs of the human body
A biogeochemical cycle, or more generally a cycle of matter, [1] is the movement and transformation of chemical elements and compounds between living organisms, the atmosphere, and the Earth's crust. Major biogeochemical cycles include the carbon cycle, the nitrogen cycle and the water cycle. In each cycle, the chemical element or molecule is ...
Living systems. Living systems are life forms (or, more colloquially known as living things) treated as a system. They are said to be open self-organizing and said to interact with their environment. These systems are maintained by flows of information, energy and matter. Multiple theories of living systems have been proposed.
Life is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from matter that does not. It is defined descriptively by the capacity for homeostasis, organisation, metabolism, growth, adaptation, response to stimuli, and reproduction. All life over time eventually reaches a state of ...
Biology. Physiology ( / ˌfɪziˈɒlədʒi /; from Ancient Greek φύσις (phúsis) 'nature, origin', and -λογία ( -logía) 'study of') [1] is the scientific study of functions and mechanisms in a living system. [2] [3] As a subdiscipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and ...
Earthing systems. v. t. e. An earthing system (UK and IEC) or grounding system (US) connects specific parts of an electric power system with the ground, typically the Earth's conductive surface, for safety and functional purposes. [1] The choice of earthing system can affect the safety and electromagnetic compatibility of the installation.
The main elements that comprise the human body (including water) can be summarized as CHNOPS . About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.
Earth system science. An ecological analysis of CO. 2 in an ecosystem. As systems biology, systems ecology seeks a holistic view of the interactions and transactions within and between biological and ecological systems. Earth system science ( ESS) is the application of systems science to the Earth.