Directions(Q.1 to Q.5 ):
In the following passage there are blanks, each of which has been numbered. These numbers are printed below the passage and against each, five words are suggested, one of which fits the blank appropriately. Find out the appropriate word in each case.
Pull a spring, let it go and it will snap back into shape. Pull it further and yet further and it will go on springing back (26) quite suddenly it won’t. What was once a spring has become a useless piece of curly wire. And that in a nutshell is what many scientists (27) may happen to the Earth if its systems are stretched like those of an abused spring. Perhaps of this concern, in the autumn of 2009, was the (28) of planetary boundaries. In the run up to that year’s climate conference in Copenhagen a group of scientists defined what they thought of as a safe operating space for human (29) – a set of nine limits beyond which people should not push their planet. The nine areas of concern were climate change, ocean acidification, the thinning of the ozone layer, intervention in the nitrogen and phosphate cycles (crucial to planet growth). (30) of wilderness to farms and cities extinctions, the build-up of chemical pollutants and the level of particulate pollutants in the atmosphere. For seven of these areas the scientists felt confident enough to put numbers to these boundaries and since then this concept has taken root.