Photo Credit: MarineBio What is biodiversity? Biodiversity refers to the components of the earth’s biosphere. Bio means ‘life’, and diversity means variation. Therefore, the variation in the type and nature of living organisms in any specific area can be termed as biodiversity of that area. According to Wikipedia , biodiversity is the degree of variation of life. This can refer to genetic variation, species variation, or ecosystem variation within an area, biome, or planet.