Concept:Land degradation reduces the health of the soil and vegetation, which in turn harms farming, livestock, and the surrounding environment.
Explanation:Statement I is incorrect.
When land degrades, the amount of vegetation decreases, so fuel wood becomes less available, not more available.
Statement II is correct.
Degraded land provides less pasture and poorer feed for animals, leading to a reduction in livestock production.
Statement III is correct.
Degraded soil loses its fertility and structure, causing a clear decrease in agricultural productivity.
Statement IV is correct.
Erosion from degraded land washes soil, chemicals, and waste into nearby rivers and streams, polluting water bodies.
Thus, the true impacts of land degradation are the ones listed in II, III, and IV only.
Answer:II, III and IV only