Експрес-тести / Варіант 2: Test 6 (3)

3. Write definitions to the following word combinations.

1) Global warming - a general increase in world temperatures caused by Carbon Dioxide collecting in space around the Earth.

2) Mud sliding - very wet earth in a sticky mass.

3) Air pollution - a contamination of the indor or outdoor environnent by any chemical, physical or biological agent that modifies the natural characteristic of the atmosphere.