Q.1-Read the passage given below and answer the questions that follow them.
Men and their activities have greatly affected nature in a very significant manner. Melting ice
and warming waters have raised average sea level worldwide by more than an inch since
1995,new data from space satellites and robotic submarines have revealed.
That’s twice as fast as the rate of oceans rose during the previous 50 years, ocean experts said. If
the current rate continues or accelerates, as they say is likely, the world’s seas will rise at least a
foot by the end of this century, causing by widespread flooding and erosion of islands and low-
lying coastal areas.
“Even a small change will matter to a whole lot of coastal people. If 15% of Greenland ice sheet
were to melt, much of South Florida would we underwater, “said Richard Alley, a geoscientist.
The rise in the sea level was caused by a recent speed-up in the melting of glaciers and ice
sheets, especially in Greenland and Antarctica, due to global warming, another serious man-
made problem threatening the world with severe consequences.
Humans have significantly affected the flow of half of the world’s major rivers by building dams,
according to the first detailed global assessment of the activity’s impact.
Read the following question and answer them by choosing the most appropriate option from
the given against each: (1x5=5)
I-“That’s the twice as fast…’what is ‘that’ here ?
(a) sea level (b) melting ice
(c) warming waters (d)melting ice and warming waters.
II- If the sea level continues rising as it is now
(a) all life would end (b) flooding will be caused
(c)widespread devastation shall be there
(d) widespread flooding and erosion, of island will be caused
III- Melting of glaciers was recently caused by
(a)warming waters (b) environmental pollution
(c) global warming (d)humid weather
IV- Global warming is a problem that has been created by
(a)man (b)deforestation
(C)weather (d) environment
V- The word ‘accelerates’ means
(a)increases (b) boosts
(d)speeds (d) runs.
Answers
Answer:
As of early 2017, the Earth had warmed by roughly 2 degrees Fahrenheit, or more than 1 degree Celsius, since 1880, when records began at a global scale. That figure includes the surface of the ocean. The warming is greater over land, and greater still in the Arctic and parts of Antarctica.
The number may sound low. We experience much larger temperature swings in our day-to-day lives from weather systems and from the changing of seasons. But when you average across the entire planet and over months or years, the temperature differences get far smaller – the variation at the surface of the Earth from one year to the next is measured in fractions of a degree. So a rise of 2 degrees Fahrenheit since the 19th century is actually high.
Explanation:
melting ice and warming water