Biodiversity:-

• The number and types of organisms present on earth refer to biodiversity.
• The number of species described is 1.7–1.8 million.
• Taxonomy is the study of the identification, classification, & nomenclature of organisms.
• Systematics (Latin’systetma’ = systematic arrangement) deals with evolutionary relationships among organisms.
• Systema Naturae is the book written by Linnaeus.