An orgainism is endangered when it is close to extinction...this happens when an organism is hunted down for its meat or other properties...
The answer is preserving biodiversity. It can be well-defined as the biological changeability among all living plants and animals of the earth as an outcome of the evolution procedures and contains of three levels of biological diversity which are genetic diversity, species diversity and ecosystem diversity.
Probably occurred with the presence of a catalyst (enzyme)
Alright bud the best answer to this question would be that one of the first scientists of the Renaissance to advance taxonomy through first hand observations was Cordus
