Nigeria has a varied landscape ranging from tropical rainforests in the south to the Obudu Plateau and Coastal plains in the southwest and southeast. The country suffers from seasonal floods during the rainy season which have killed hundreds and displaced millions, as well as from desertification in the north due to deforestation. The Niger Delta region has faced devastating pollution from the oil industry as well as human rights violations, while waste management is a major issue across the country due to problems with sewage treatment and the effects of deforestation, soil degradation, and climate change.