Questions 11 ~ 13 :
The world's population keeps growing. There now are about 4 billion of us on earth. That could reach 6 billion by the end of the century and 11 billionin a further 75 years. Experts have long been concerned about such growth. Where will we find the food, water, jobs, houses, schools and health to care for all these people?
A major new study shows that the situation may be changing. A large and rapid drop in the world's birth rate has taken place during the past 10years. Families generally are smaller now than they were a few years ago. I! is happening in both developing and industrial nations.
Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using birth control de-vices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from home instead of having children. And more governments, especially in developing nations, now support family planning pr