6 ACTIVATE Work in groups. Look at the list of waste products in exercise 5. Decide on the three things which pollute the environment the most. Then answer the questions.

Air pollution is the introduction of harmful substances into the air, which has a negative impact on the environment, as well as on humans. As a result, the air is no longer clean.

In particular, hydrocarbons, various organic compounds, dust particles, gases are emitted into the air.