Available Answers

1. 1.

   What is the historic event that triggered the development of technology?
2. 2.

   Name some pollutants with pronounced stability.
3. 3.

   What kind of pollution is the main cause of ozone depletion?
4. 4.

   What are the three transition gases?
5. 5.

   What is the most serious pollutant for the sea?
6. 6.

   What is pollution?