Answer:
B: freshwater sources are scarce in the region.
Explanation:
sorry I'm late
and the other guy sucks
<span>The answer is letter d. planting trees. Desertification is the result of droughts and also deforestration. Planting trees is an effective way to reverse and combat desertification. Tree roots binds/holds the soil together preventing soil erosion and also conserves rainwater through its roots keeping the soil fertile and away from being deserted.</span>
Answer:
Scientists use waves to study the different layers of the earth. Usually, they use seismic waves, which are waves generated by earthquakes or nuclear-test explosions. So, scientists study the path and speed of these waves through the earth to decipher boundaries and the materials that make up the layers.
Explanation:
A balsalt I think is the answer I might be wrong sorry
1 and 2 A. 3 is C. 4 is B
