Describe the consumptive use value of biodiversity as food, drugs and medicines, fuel and fiber with suitable examples.

Biodiversity provides a range of goods from agriculture crops to medicines and fibres to which a direct value and cost can be assigned. The direct economic value of the natural environment can be divided into associated with consumptive values
a) FOOD: A large number of wild plants are consumed by human beings as food about 90% food crops have been domesticated from wild tropical region like Chenopodium (bathua) Melilotus alva (sengri).
b) DRUGS AND MEDICINE: About 75% of the world population depends upon medicines. The wonder drug penicillin used as antibiotic is derived from fungus called penicillium
c) FUEL: Our forests have been used since ages for the fuel wood. The fossil fuels like coal, petroleum and natural gas are all products of fossilized biodiversity.