Answer:
<em>A. 6,000 years</em>
Explanation:
Original sample N = 60 g
The half life of N/2 is 3000yrs
"""""""""""""""""""N/4 is 6000yrs
N/4 ===> 15 gram
it takes 6000yrs to decrease to 15grams
The choices for this question can be found elsewhere and as follows:
<span>A. drought
B. draft
C. heat wave
D. flood
</span>
The correct answer among the choices is option A. <span>An extended period of well below average rainfall is known as a drought. Drought is the lack of water for a period of time.</span>
Answer: Is prone to desertification or drought.
Explanation: The Sahel region is located in Africa between the Sahara to the north and the Sudanian Savanna to the south.
The Sahel has a semi arid climate which is characterized by precipitation below potential evapotranspiration.
What this means is that the amount of water that would be evaporated and transpired by a specific crop or ecosystem is low. This region is prone to desertification or drought because of the low amount of water evaporated and transpirated in the region.
Because of oceans, mountains, and trenches, the earth is not as round.
