Building materials video

http://is.vstecb.cz/do/5610/pr/zkcj/OB/St/AJ/t02/st_aj_t02.html

Questions

1. What is a building material?
2. How is the use of building materials divided?
3. Which building material is known for its long lasting durability?
4. Which material has been used to attract more tourists in northern areas?