Задание 
Match the words with the definitions.
Write the number of the definition near the word.
To cut down on [ ]
Emission [ ]
Climate change [ ]
To congest [ ]
Changes in the world's weather as a result of human activity.
To consume less of a particular thing.
To make something blocked or crowded in a way that causes difficulties, or to become blocked or crowded.
The act of sending out gas, heat, light, etc.