Переведите на русский. We build because we need shelter. We need shelter from sun, rain, wind and snow. Not much that modern people do takes place outdoors. Our activities mostly take place indoors. For this activities we may need air that in warmer or cooler than the air outdoors. We may also need less light by day and more light by night than is provided by nature. In order to have shelter provided with modern services and accommodation, people all over the world use many different construction materials and arrange them into different constructions. Since prehistoric times the constructions have served as shelter and accommodation for a man, a group of people, a family, a few families, many families, an organization, or an enterprise.