ответ:1. There were no cars, and it was cold in winter.
2. There were a lot of coal mines, and many worked there. It was difficult and dangerous. At first there were no cars, and then coal mining began to gradually improve, and it was not so difficult and dangerous. The mines were dirty and harmful to the environment.
3. Doctors and dentists.
4. Machines help people, such as drilling teeth.
5. Green economy means clean and safe. Kazakhstan wants to become a green economy by 2050
Объяснение: