Read the magazine article and answer the questions. 1 What problem does the author focus on? 2 What causes this problem?

1 A lot of birds die every year.

2 It happens when oil tankers are shipwrecked , causing oil pollution.

3 It takes about 40 minutes to clean one bird and it doesn’t solve the problem.

4 The best way to solve the problem is to prevent shipwrecks of oil tankers and to make tankers smaller.

5 The purpose of the article is to make people aware of the problem and start calling for change.