Water supply, sanitation, waste management, transportation, energy supply, communication and education

Living things that are neither human nor domesticated

Used water, typically discharged into the sewage system and often contains matter and bacteria in solution or suspension

The physical, chemical, biological and organoleptic (taste-related) properties of water

The activities that include both producing and responding to words, either written or spoken

Any species (including animals, plants, fungi, etc.) which are vulnerable to extinction in the near future. World Conservation Union (IUCN) is the foremost authority on threatened species, and treats [..]

Tourism envisaged as leading to management of all resources in such a way that economic, social and aesthetic needs can be fulfilled with maintaining cultural integrity, essential ecological processes [..]

Individuals or institutions (public and private) interested and involved in a process or related activities

Use of resources, in an environmentally responsible, socially fair and economically viable manner, so that by meeting current usage needs, the possibility of its use by future generations is not compr [..]

A term now in common use in architecture and refers to design that reduces energy and water consumption, uses environmentally innocuous materials, and is in harmony (aesthetic, environmental, and cult [..]