Carolus Linnaeus recognized the vital role of the internal environment and suggested that objective of mechanisms within the body is to preserve the constant conditions of the internal environment. He was later known as the creator of current modern system of naming animals called binomial nomenclature
A region must meet two strict criteria: must have at least 1,500 vascular plants as endemics, and it must have a high percentage of plant life found nowhere else on the planet. A hotspot is irreriplaceable