1. Children have to work instead of going to school and playing. 2. People do not have enough food and many suffer from hunger. 3. The Earth is getting hotter and this changes the climate. 4. Air, water and land become dirty and dangerous for people and animals. 5. People have no home and live on the streets or in shelters. 6. Some animals may disappear because they are not protected. 7. People have very little money and cannot buy basic things.

Ответ:

1. Children have to work instead of going to school and playing. (Child labor)
2. People do not have enough food and many suffer from hunger. (Hunger)
3. The Earth is getting hotter and this changes the climate. (Global warming)
4. Air, water and land become dirty and dangerous for people and animals. (Pollution)
5. People have no home and live on the streets or in shelters. (Homelessness)
6. Some animals may disappear because they are not protected. (Endangered species)
7. People have very little money and cannot buy basic things. (Poverty)

Все эти проблемы очень важны, и их решение требует усилий каждого из нас. Продолжай изучать и интересоваться, и ты сможешь внести свой вклад!