<P> A greenhouse ( also called a ' glasshouse ' , or , if with sufficient heating , a hothouse ) is a structure with walls and roof made chiefly of transparent material , such as glass , in which plants requiring regulated climatic conditions are grown . These structures range in size from small sheds to industrial - sized buildings . A miniature greenhouse is known as a cold frame . The interior of a greenhouse exposed to sunlight becomes significantly warmer than the external ambient temperature , protecting its contents in cold weather . </P>
<P> A greenhouse ( also called a ' glasshouse ' , or , if with sufficient heating , a hothouse ) is a structure with walls and roof made chiefly of transparent material , such as glass , in which plants requiring regulated climatic conditions are grown . These structures range in size from small sheds to industrial - sized buildings . A miniature greenhouse is known as a cold frame . The interior of a greenhouse exposed to sunlight becomes significantly warmer than the external ambient temperature , protecting its contents in cold weather . </P>
what is the green house made out of
what is the green house made out of
transparent material
transparent material