Topic 5.10 Consequences of Agricultural Practices: explain the environmental and societal consequences of agricultural practices, including pollution, soil and land degradation, water use, and changes to rural land use and society.

What this topic is asking

Topic 5.10 weighs the costs of how we farm. The College Board wants you to explain the environmental consequences of agricultural practices (pollution, soil and land degradation, desertification, deforestation, water use) and the societal consequences (changes to rural land use, rural society, and diet). The skill is to connect a farming practice to its effect on the land and on people, the human-environmental interaction of Topic 1.5 applied to agriculture.

Environmental consequences

The first half is the cost to the land and water.

These effects threaten the long-term productivity of farmland itself, which is why sustainability becomes the focus of Topic 5.11.

Societal consequences

The second half is the cost to people and communities.

Changing agricultural practices reshape society:

• Rural workforce and land use: mechanisation and agribusiness (Topic 5.7) have reduced the farm workforce and consolidated small farms into larger operations, changing how rural land is owned and worked.
• Rural depopulation: as fewer workers are needed, people move to cities for work (the urbanization seen since the Second Agricultural Revolution, Topic 5.4), draining rural communities.
• Diet and land use: shifts in what is grown (more cash crops, more meat production) change diets and the use of land, with large areas devoted to feed crops and grazing.

These societal effects link agriculture to migration (Unit 2), cities (Unit 6), and development (Unit 7).

Why this matters for the exam

Consequences of agricultural practices connect the Green Revolution (5.5) and agribusiness (5.7) to the sustainability challenges of Topic 5.11, and they apply human-environmental interaction (1.5) to farming. FRQs ask you to define soil degradation, explain a pollution mechanism, or describe a change to rural society, so practice linking a farming practice to a specific environmental or societal consequence.

Try this

Q1. Identify the term for the spread of desert-like conditions onto formerly productive land. [Recall]

• Cue. Desertification; it is driven by overgrazing, overcultivation, deforestation, and drought, degrading once-productive land into desert-like conditions.

Q2. Explain how chemical fertilizer use can harm water bodies. [Short explanation]

• Cue. Fertilizer runoff carries nitrogen and phosphorus into rivers and lakes, causing eutrophication, an overgrowth of algae that depletes oxygen and kills aquatic life.