Sahara Desert

Loss of land by Erosion

50 years ago

answer:

his season change happened continuously every 20,000 years, the study found. The other part of the season produced monsoon conditions, resulting in a wetter, greener, plant-rich environment. When the rainy activity weakens, the climate becomes hot and dry, like the Sahara remains today.

Explanation:

answer; ///i believe that the correct answer is (d); ///