Answer:
- Demographic and genetic phenomena
- Destruction of wild habitats
- Introduction of invasive species
- Climate change
- Hunting and illegal trafficking
Explanation:
A research perceived that fenetic loss of biodiversity makes it difficult for conservationists to assess the decline of species in real time, said Inger Andersen, an executive director of UNEP. It is considered that a species is extinct when the last known specimen dies without leaving a genetic successor, thus over 99 % of organisms that used to live on earth do not exist any more. In general terms, species become extinct for the following reasons:
