Question

mastering the grade 10 global history section 3b: analyzing evidence - based data traditionally, african farmers cleared land, grew crops for a few harvests, then let the fields lie fallow for 10 or 15 years to rejuvenate as they moved on to clear more land. but as they try to feed a rapidly growing population, the farmers instead grow crop after crop, sapping the soils fertility. “nothing grows, so the topsoil is blown away by the wind and washed away by the rains,” said amit roy, president of the international fertilizer development center, an agricultural aid organization, which produced the study. “it goes into the river system, silting them, and out to the oceans.” source: celia dugger, “overfarming african land is worsening hunger crisis” 5. which problem in sub - saharan africa is described in this passage? 1. global warming 3. urbanization 2. acid rain 4. desertification 6. in africa, a key factor that led to the situation described in the passage is 1. over - planting the soil 3. burning of fossil fuels 2. disposal of toxic waste 4. overgrazing of livestock in this section, the “enduring issue” of the impact of globalization encompasses the key idea that different organizations have been created to try to have countries work together to solve mutual problems by looking at the roles of the united nations, nato, the european union, and nongovernmental organizations (ngos). section 4a: organizations promoting international cooperation in a world that could be on the brink of nuclear annihilation in the blink of an eye, there have been attempts to bring about international peace and cooperation among nations. major international organizations several international organizations have emerged in the aftermath of world war ii. the united nations the victorious allies in world war ii created a new global peace - keeping organization in 1945, known as the united nations. the united nations charter sought to promote world peace while encouraging friendship and cooperation among its member nations. member nations agreed to give up the use of force in disputes, except in self - defense. the un also works to eliminate hunger, disease, ignorance, and promotes human rights and economic development. see page 140 for a fuller discussion.

Explanation:

1. The passage describes African farmers over - planting, which leads to soil fertility loss, topsoil erosion. This is related to desertification as the degradation of land can turn areas into desert - like conditions.
2. The key factor mentioned in the passage is that farmers grow crop after crop, sapping the soil's fertility, which is over - planting the soil.

Answer:

1. 4. desertification
2. 1. over - planting the soil