Never before has the world been facing so many problems. The first problem is overpopulation. Despite different plans to control the population, it has risen continually. The problem of overpopulation is the cause of other problems the world deals with. More people need more energy. That leads to the present-day energy crisis. Another problem is pollution. Mankind has destroyed the environment with their activities. Since the Industrial Revolution, environmental destruction has got worse and worse: disappearing forests, rising sea levels, melting pole ice and polluted air. During the lockdown of Covid-19 in early 2020, many countries had better air quality because people stopped using cars and factories stopped working. Humans are responsible for all the world’s problems.

Teenagers (26) take part in community services. These activities have huge benefits. It is obvious that the society benefits from these activities. (27) , the old are cared for; the streets are cleaned up; the blood bank has a plentiful supply. In return, those who do community services gain a lot. They have a chance to contact different groups of people. This (28) them precious lessons of communication. They can improve their skills. They (29) how to work in a team. Above all, they learn to share and care for others. In short, community services are (30) and should be part of teenagers’ education.