Biodiversity loss has always existed as a natural process but threats to biodiversity arise when the rate of extinction exceeds the rate of specification.

Biodiversity loss is primarily related with human interactions with natural resources.

In early phases of life, humans remained as one component of ecosystem but, very recently, humans have become a factor of ecosystem and started reshaping the biodiversity.

Humans have drastically disturbed the natural rate of extinction of species. Factors that cause loss of biodiversity have exceeded the factors that cause gains in biodiversity. Rate of specification has been adversely affected due to which many species have disappeared from the earth and many are facing varying degrees of threat of extinction.