A biofuel is a fuel that is produced through contemporary processes from biomass, rather than a fuel produced by the very slow geological processes involved in the formation of fossil fuels, such as oil.Examples of biofuels include ethanol (often MADE from corn in the United States and sugarcane in Brazil), biodiesel (from VEGETABLE oils and liquid animal fats), green diesel (DERIVED from algae and other plant sources) and biogas (methane derived from animal manure and other digested organic material)Biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem LEVEL. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivityTypes of Biodiversity. Biodiversity includes three main types: diversity within species (genetic diversity), between species (species diversity) and between ecosystems (ecosystem diversity).The different varieties and types of animals and plants that live in the ocean is an EXAMPLE of biodiversity