Final answer:
The lowland areas of Nigeria are characterized by three common biomes: Tropical Rainforests, Grasslands, and Wetlands. The tundra biome is not present in this region due to its warm climate.
Step-by-step explanation:
In the lowland areas of Nigeria, the three biomes commonly found are B. Tropical Rainforests, A. Grasslands, and C. Wetlands. Nigeria's lowlands don't have conditions that support D. Tundra, which is characterized by cold temperatures and short growing seasons, typically found in Arctic regions. The tropical rainforests, known as tropical wet forests, are rich in biodiversity and found in equatorial regions. Grasslands in Nigeria would be of the savanna type, characterized by dominant grasses rather than large shrubs or trees, which can survive with lower precipitation and periodic fires. Wetlands are areas where the soil is saturated with water, either permanently or seasonally, and these provide an important habitat for a variety of plant and animal species.