Scientists believe that besides im- proving farming methods and limi - e2 ed grazing of livestock in desert areas expansion of the deserts can be checked. Steps should be taken to prevent e further desert expansion and also to u reclaim some of the barren land At a large scale plantation should s be carried out in certain desert areas to reduce the wind at ground level. There are many avenues to cop with 2+ this menace. Industries should be ef- ficient enough to manufacture goods with such resources which produce less wastes.

Wastes can be recycled and reused. yki It helps to conserve natural resour-le ces. It also helps to reduce the pollu- tion that may result in disposing of various waste materials. riu Many countries have establishedf recycling centres for the collec-i tion of recyclable wastes. Ope- rators of the centres sort out the R02 wastes and send them to manu- facturers who change them into useable materials. Some recycling centres are special- xAL ized in one type of waste such as ż, bone, glass, metal cans and paper board etc Commonly recycled wastes include- aluminium and steel cans, glass containers, paper and bones. The use of CFCs (Chlorofluorocar- hinj bons) and ozone depleting chemi- cals should be put to an end. In U.S.A. ban has been levied for Js use of CFCs sprays many years ute u ago. It is necessary to impose an international ban on production and use of all CFCs and other ozone depleting chemicals. Problem of acid rain also needs tou be solved by mutual agreement between countries.   fumes from power stations and factories have to be checkmated to cut down the pollution that causes acid rain to avoid massive oil spills the oil tanker should have Double helps to avoid collision in waterways a better traffic control system need to be  introduce the to the semen oil tankers should be kept ok sure so that in case of accidents the beauty of sure could be saved by the spilled oil.
 message oil spills are generally treated as accidents oil spills are inevitable but the ways we ship oil should be streamlined and flawless there is added to establish such modern plants which could efficiently change the sewage into clean fertilizers that farmers and gardner's main use and the filtered water can be used is non performing and gardening to spend enough money to build the most important treatment plants and sewage system is the only Key  P2 the solution similarly concrete steps are to be taken to get safety from radio activity  sparked during the atomic process.