What is on negative effect of the the huge oil reserve in Nigeria?.

deforestation
desertification
air and water supply
unemployment

http://en.wikipedia.org/wiki/Petroleum_industry_in_Nigeria#Environmental_impact

The answer is A.

One negative effect of the huge oil reserve in Nigeria is environmental degradation, which includes deforestation, desertification, and pollution of air and water supplies.

Deforestation: The extraction of oil often involves clearing large areas of forest to make way for drilling sites, pipelines, and infrastructure. This can result in the loss of biodiversity and disruption of ecosystems.

Desertification: Oil extraction activities require the clearing of land, which can contribute to soil erosion. The removal of vegetation cover and disturbance to the natural landscape can result in the transformation of previously habitable land into desert-like conditions.

Air and water supply pollution: Oil spills and leaks from pipelines, storage facilities, and offshore drilling contribute to the pollution of air and water supplies. This poses health risks to both humans and wildlife, as well as adversely affecting aquatic ecosystems.

Unemployment: Paradoxically, the presence of extensive oil reserves can actually lead to unemployment in other sectors of the economy. The focus on oil extraction can distort the economy and neglect investment in other industries, resulting in limited job opportunities outside the oil sector.

To find information about the negative effects of oil reserves in Nigeria, you can refer to a variety of sources. These may include academic papers, research articles, environmental reports, and news articles from reputable sources. Additionally, you can search for studies or reports specifically focused on the environmental and socio-economic impacts of oil extraction in Nigeria.