Sequence the statements below to show the steps of the disease asbestosis. Write “1” on the line in front of the first step, “2” on the line in front of the second step, and so on.

______ 7. Asbestos fibers are inhaled. ______ 8. A person is exposed to asbestos in the air. ______ 9. The person has an increasingly difficult time breathing. ______10. Inhaled fibers cut and scar the person’s lungs. ______11. The person may die of heart failure. ______12. The disease asbestosis develops.