People usually build their houses out of the materials that are easily
Available to them. In some areas most people build their homes out wood.
This is true in parts of North America and in Scandinavia. These areas have
Large forets so wood is easy to get and inexpensive. In many other areas
Of Europe there are few forests left. Stone and brick are cheaper, so most
People build their houses of these materials. In topical , houses are sometime
Made from plants that grow there. For example in parts of Africa or Asia
Houses may be made out of bamboo. Finally in the very coldest areas near
The Arctic, people make their homes out of blocka of ice
The topic of this passage is
a. Houses around the world
b. How to build cheaper houses
c. The wooden houses of North America
d. Materials used for houses