CONSERVATION

[noun] [U]Conservation is the protection of plants and animals, natural areas, and interesting and important structures and buildings, esp. from the damaging effects of human activity.wildlife conservationa conservation areaThe group are involved in a conservation battle to save this extraordinary old house.Conservation is also the preservation of valuable natural substances that exist in limited amounts.the conservation of coal/gas/oil reservesAs well as helping the environment, energy conservation reduces your fuel bills.