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 ..
The word habitat means living or dwelling place. Habitat of an organism is a part of the total environment of the region and it must offer the resident organism food, shelter and climatic conditions that are well suited for the organism to survive, reproduce and flourish.ummary. Ecology concerns with the associations and interactions of the organisms and the environment in general. The living place or dwelling place of an organism is called habitat.