Answer:
tornados, hurricans, fires
Explanation:
'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.
The answer is true bc earthquakes are caused by seismic waves in the earth and that happen all over the world.
It would be false because health care costs money and so does welfare
By the mid 2030's. You can find it on their website.
