(i) Humans derive numerous economic benefits directly from diversity of organisms.
(a) .Food products (cereals, pulses and fruits).
(c) Fibre (cotton, jute from plants and silk, wool from animals).
(d) Construction material (timber for making furniture, houses and sports goods).
(e) Industrial products (tannins, lubricants, dyes, resins and perfumes).
(f) Products of medicinal importance (about 25,000 plants are used in traditional medicine).
(ii) There are huge indirect benefits that humans derive from the diversity of life.