Biodiversity is the diversity of species found in different ecosystems including the diversity observed in living species from various sources such as air, water and land. However, the world’s biodiversity is rapidly declining. The causes are:
Loss and fragmentation – Uncontrolled and unsustainable human activities such as deforestation, deforestation, mining, arson and urban migration cause the land to be damaged or transformed. This leads to the fragmentation of habitats into smaller fragments that affect animal migration and the decline in genetic interactions between humans leading to the decline of species.
Extinction – One species is connected to another in a complex network. The extinction of one species results in the extinction of another species when they are linked to each other in a binding connection. For example, the end of a host can cause the extinction of its parasites.
Excessive exploitation – Humans have caused species to become extinct or endangered as a result of over-exploitation and over-hunting of various plants and animals.
Indigenous invasion – Deliberate importation of non-native species to an endangered species. Example – Inch perch caused the extinction of more than 200 species of Lake Victoria in Kenya when they were introduced to the lake.