'Climatic variations' and 'Human activities' can be regarded as the two main causes of desertification. removal of the natural vegetation cover（by taking too much fuel wood）, agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.
Answer:
Palestine east of the Jordan River
Explanation:
Answer:
1. A fault is a fracture or a zone of fractures that separates two blocks of rock from one another.
2. Active faults
3. Inactive faults
4. a fault that is expected to be the site of another earthquake in the near future.
5. Structures that we can recognize but that do not produce earthquakes are referred to as inactive faults.
6. Central Philippine Fault
7. Marikina Valley Fault
8. Western Philippine Fault
9. Eastern Philippinr Fault
10. Southern Mindanao Fault
Explanation:
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