After the introduction of cotton, tobacco, sugarcane, sunflower, soyabean and so on, farmers became victims of monocultures in their greed for money. Therefore many of the indigenous varieties of crops were lost. Moreover, the hybrid varieties of fruits and vegetables (e.g. tomatoes), introduced for pulp are more susceptible to disease and pests. Though hybrid varieties are preferred, traditional wild varieties of the seeds should be conserved for future use in the event of an epidemic.

Conservation of biological diversity leads to conservation of essential ecological diversity to preserve the continuity of food chains.

thank you

ऐ WHO का logo change करने कीज्ञजरूरत है ऐसा नहीं लगता why there is snake ok it was past thing but yet not change in such a modern era of technology where medical term has gone through drastic change ऐसे ऐसे तकनीक ईजाद की मानव को खतरे से बाहर निकलने के लिए

climate change pollution man-made creating बाहर कैसे निकले निसर्ग तेवढाच आवश्यक जेवढा श्वास पन तो श्वास सुध्दा निसर्गीचीच देन मग कमी कुठे पडतोय नक्की च ह्यावर उपाय असावा काय बर निसर्गा मधेच ह्याच उत्तर लपलय पन मानवी मेंदू शोधन्यात अजून असमर्थ human r nature creations & know it's thinking so may expected such calamities we have 2 find out now such besic r - more plant& 2 more ozen then less transport the issue came of economic then what ...? ऐसा क्या करें के लोग ज्यादा पेड़ लगाने

nice

All government offices should maintain a garden with some trees and plants.if the office is having a canteen facility,it should be in the middle of the garden.These gardens in every offices will control the pollution of the city.In each garden some medicinal plants may be planted.

Trees are to be planted in both sides of Highways,and some parks may be maintained by the Highways within every 5 kilometres, with a drive-in hotels providing eco-friendly foods.Like that both sides of Railway track are also wasted by the Railways.These areas are to planted with some trees and a park also be maintained in every station.

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