Section 4
Questions 31-32 Complete the notes using
NO MORE THAN THREE WORDS AND/OR A NUMBER for each answer.
Main focus of lecture: the impact of 31______ on the occurrence of dust storms.
Two main types of impact: 1. break up ground surface, e.g. off-road vehicle use
2. remove protective plants, e.g. 32______
Complete the table using NO MORE THAN THREE WORDS for each answer.
| Name of area | Details |
| USA ‘dust bowl’ | Caused by mismanagement of farmland Decade renamed the (33) ________ |
| West Africa | Steady rise in dust storms over 20-year period |
| Arizona | Worst dust clouds arise from (34) ________ Dust deposits are hazardous to (35) ________ |
| Sahara | Increased wind erosion has occurred along with long-term (36) ________ |
Questions 37-40
Complete the flow chart below.
Write ONE WORD ONLY for each answer.
Foundation for Essay Writing
Intensive 37______ in Central Asian Republics |
↓
Drop in water in major tributaries |
↓
Total volume of water in lake reduced by 38______ |
↓
Increase in wind-blown material |
↓
Lake has become more 39______ |
↓
Serious effects on 40______ nearby |