Accountability: (n.) an obligation or willingness to accept responsibility or to account for one's actions
Committee: (n.) a self-constituted organization for the promotion of a common object
Conserving: (v.) to keep in a safe or sound state
Demand: (n.) urgent need
Ecosystem: (n.) the complex of a community of organisms and its environment functioning as an ecological unit
Efficient: (adj.) productive of desired effects
Environment: (n.) the complex of physical, chemical, and biotic factors that act upon an organism or an ecological community and ultimately determine its form and survival
Essential: (n.) something necessary, indispensable, or unavoidable
Extinct: (adj.) no longer existing
Landfills: (n.) a system of trash and garbage disposal in which the waste is buried between layers of earth to build up low-lying land
Noxious: (adj.) physically harmful or destructive to living beings
Pollutions: (n.) the action of making an environment unsuitable or unsafe for use by introducing man-made waste
Privileges: (n.) a right or immunity granted as a peculiar benefit, advantage, or favor
Suffocate: (v.) to be uncomfortable through lack of fresh air
Sustainability: (adj.) a method of harvesting or using a resource so that the resource is not depleted or permanently damaged