Fact 1: Drought is when amount of precipitation decreases. Fact 2: Drought causes famine, which contributes to decentralization and unrest. Given the two facts above, what can cause famine?
Options:
[i] Movement of an air mass
[ii] Effective fertilizers
[iii] the ground shaking
[iv] Increased irrigation
[v] Crop harvesting
[vi] Decreased precipitation
[vii] single-celled organisms
[viii] forest is destroyed
[vi]