Answer: a. Livestock grazing areas
Livestock grazing areas is not an example of an ecological service provided by forest. The ecological service of the forest will be providing an aesthetic environment. The forests reduce the soil erosion by keeping in hold of soil by the roots, forests liberate fresh oxygen in the air which keeps the water body oxygenated. Forests are the carbon sinks which mainly absorb the carbon dioxide present in the air for the purpose of photosynthesis.
