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What causes the drought cycles in africa? a. the jet stream b. mount kilimanjaro c. monsoon climate zones d. quickly evaporating rainwater

Adepression on the surface of the land caused by the collapse of a cave roof is a blank. a) valley b) sinkhole c) mound

The force of gravitational attraction between the sun and venus could be increased by reduseing which of the followinga. the distance between the sun and venus b. the period of rotation of the sunc. the mass of the sun and venusd the speed of the orbit of venus