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.