Experts generally recommend seven to nine hours a night for healthy adults. Sleep scientists say new guidelines are needed to take into account an abundance of recent research in the field and to reflect that Americans are on average sleeping less than they did in the past.
Synonyms: inhabitation, domicile, habitation, home, dwelling, inhabitancy, abode, dwelling house. habitation. Abode, dwelling, and habitation are used with little difference of meaning to denote the place where one habitually lives; abode and habitation belong to the poetic or elevated style. Even dwelling is not used in familiar speech; a person says my house , my home , or more formally my residence ..
A habitat is an ecological or environmental area that is inhabited by human, a particular species of animal, plant, or other type of organism. A place where a living thing lives is its habitat.It is a place where it can find food, shelter, protection and mates for reproduction.It is the natural environment in which an organism lives, or the physical environment that surrounds a species population. habitat is not necessarily a geographic areaâfor a parasitic organism it is the body of its host, part of the host's body such as the digestive tract, or a cell within the host's body.