1. Carl Linnaeus ( )
Human beings
Animal;
Chordate;
Mammal; Primate;
Hominid;
Homo sapiens

4. Ecosystem

6. Community
Habitat
Niche
Competitive Exclusion
Symbiosis
mutualism
parasitism
The word "niche" is derived from the Middle French word nicher, meaning to nest. The term was coined by the naturalist Joseph Grinnell in 1917, in his paper "The niche relationships of the California Thrasher."[4] However, it was not until 1927 that Charles Sutherland Elton, a British ecologist, gave the first working definition of the niche concept. He is credited with saying: "[W]hen an ecologist says 'there goes a badger,' he should include in his thoughts some definite idea of the animal's place in the community to which it belongs, just as if he had said, 'there goes the vicar.'"[5]

8. Photosynthesis
Respiration