cause, growing, more, face, but, born, keep, watch, mouths, number A very important problem is the growing population on the earth. The population of the world today is 81 than 6.5 billion. That is a great 82 and we know it quite well. The important thing is not how large the population of the world is now, 83 is the rate of the growth . It is about 1.63 percent every year after the number of dead people has been taken away. Look at the second hand of your 84 . Every second more than 4 babies are 85 in the world. Another baby! Another baby! Another baby! You can’t speak quickly enough to 86 up with the birth rate. The population is 87 faster and faster. So it goes on, hour after hour. In one day, people have to find food for over 350, 000 88 . This great growth of population will 89 a big problem by the year 2010-there will be as many as 7, 000, 000, 000 people on the earth. So this is one of the biggest problems you are going to 90 in your life. 【查看更多】
