How can soil degradation and erosion lead to food scarcity for substance farmers?

Witch one is it soo it the the question b.a,b,c,d

About 140,000 japanese died in this japanese city when americans dropped an atomic bob at the end of world war ii

Venezuela’s economy relies most heavily on which of the followingvenezuela’s economy relies most heavily on which of the following? a. oil reserves in places such as the eastern llanos b. cattle ranching in the grasslands c. fertile farmland in the andean highlands d. coffee plantations in mountainous areas