Answer:
(i) We have selected various crops from the reserve of edible plants from a bio diverse environment. (ii) We have also experimented and selected many medicinal plants. (iii) There are animals who are milch animals. They provide us milk along with other milk products prepared by us. (iv) They also provide us help during drought-prone season in cultivating and ploughing the fields. (v) The fish is nutritive and provides rich proteins. (vi) Many insects help in pollination of crops and fruit trees. So every species has a role to play in the ecosystem.
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