Oil palm trees (Elaeis guineensis) in a plantation. The fruit of this plant contains oils that are used in many food products and non-food household products. It is also potentially useful for the production of biodiesel. Though native to West Africa, this species of palm has been successfully introduced to many tropical regions. In Malaysia, the cultivation of oil palms has led to a significant loss of rainforest and decrease in biodiversity. Photographed in Malaysia.