World ऐसा था 400 Million years पहले | Random facts | FactStar

The global climate has always fluctuated. Millions of years ago, some parts of the world that are now quite warn, were covered with ice, and over recent centuries, average temperature have risen and fallen in cycles. What is new, however, is that current and future climate change will be caused not just by natural events but also by activities of human beings. Suggest three simple ways to help save our planet.

One of the most interesting new books published recently is "Spaceship" by Prof. E.C. Walker. Our earth he says 61. (a) is /(b) have been (c)/ will be like a spaceship, and all the 400 million people 62. (a) over/ (b) on /(c) upon earth are passengers on it. And we are heading 63. (a) about /(b) to /(c) towards a disaster. The levels of atmospheric pollution 64. (a) increasing/ (b) arriving/ (c) coming in the cities and industrial areas of the world could in time change the weather patterns of the earth, raising the temperature 65. (a) in /(b) of /(c) for the whole planet. If this rose a few 66. (a) degrees /(b) steps /(c) miles the deserts of the world would expand to double their size. The polar ice caps would start melting. If the polar ice caps melted, the 67. (a) water/ (b) ice /(c) sea level all over the world would rise 68. (a) in/ (b) by/ (c) to about 60 meters. Prof. Walker's 69. (a) idea /(b) thought /(c) book is not at all about gloom and doom. He admits that the 70. (a) ideas/ (b) solutions /(c) changes he describes could take thousands of years.