Conservation is the preservation or efficient use of resources, or the conservation of various quantities under physical laws. Conservation may also refer to: Environment and natural resources Nature conservation, the protection and management of the environment and natural resources Wetland conservation, protecting and preserving areas where water exists at or near the Earth's surface, such as swamps, marshes and bogs. Conservation biology, the science of protection and management of biodiversity Conservation movement, political, environmental, or social movement that seeks to protect natural resources, including biodiversity and habitat Conservation organization, an organization dedicated to protection and management of the environment or natural resources Wildlife conservation, the practice of protecting wild species and their habitats in order to prevent species from going extinct Conservation (magazine), published by the Society for Conservation Biology from 2000 to 2014 Conservation Biology (journal), scientific journal of the Society for Conservation Biology Physical laws Conservation law, principle that a particular measurable property of an isolated physical system does not change as the system evolves over time Conservation of energy, principle that the total energy of an isolated system remains constant over time Conservation of mass, principle that the mass of any closed system must remain constant over time Conservation of linear momentum, principle that the total momentum of a closed system is constant Conservation of angular momentum, principle that total angular momentum of a system is constant Charge conservation, principle that the total electric charge in an isolated system never changes Land designated for conservation Conservation area (United Kingdom), an area considered worthy of preservation because of its architectural or historic interest Conservation designation, the status of an area of land in terms of conservation or protection Conservation district, government entities that help manage and protect land and water resources in U.S. states and insular areas Conservation easement, a power of an organization to constrain the exercise of rights otherwise held by a landowner to achieve certain conservation purposes Conservation community, a community committed to saving large parcels of land from ecological degradation Other uses Conservation (psychology), learning development of logical thinking, according to Jean Piaget Conservation and restoration of cultural property, the conservation or restoration of cultural heritage Conservation and restoration of immovable cultural property Conservation science (cultural property), the interdisciplinary study of conservation of cultural works See also Conservation ministry (disambiguation) Conversation (disambiguation) Conservation science (disambiguation) Conservatism (disambiguation) Conserve (disambiguation) Conserved quantity, in mathematics, a