Question

Q2. Read the following passage and answer the questions that follow. Of the 197 million square miles making up the surface of the globe, the interconnecting bodies of marine water cover 71 percent; the Pacific Ocean alone covers half the earth and averages nearly 14000 feet in depth. The continents- Eurasia, Africa, North America, South America, Australia, and Antarctica- are the portions of the continental masses rising above sea level. The submerged borders of the continental masses are the continental shelves, beyond which lie the deep-sea basins. The oceans attain their greatest depths not in their central parts, but in certain elongated furrows or long narrow troughs, called deeps. These profound troughs have a peripheral arrangement, notable around the border of the Pacific and the Indian oceans. The position of the deeps near the continental masses suggests that the deeps, like the highest mountains, are of recent origin since otherwise they would have been filled with wastes from the lands. This suggestion is strengthened by the fact that the deeps are frequently the sites of world-shaking earthquakes. For example, the _tidal wave' that in April 1946 caused widespread destruction along Pacific coasts resulted from a strong earthquake on the floor of the Aleutian Deep. The topography of the ocean floor is none too well known since in great areas the available sounds are hundreds or even thousands of miles apart. However, the floor of the Atlantic is becoming fairly well known as a result of special surveys since 1920. A broad well-defined ridge- the Mid Atlantic Ridge-runs north and south between Africa and the two Americas, and numerous other major irregularities diversify the Atlantic floor. Closely spaced soundings show that many parts of the oceanic floors are as rugged as mountainous regions of the continents. The use of the recently perfected method of echo sounding is rapidly enlarging our knowledge of submarine topography. During the Second World War great strides were made in mapping submarine surfaces, particularly in many parts of the vast Pacific basin. The continents stand on an average of 2870 feet - slightly more than half a mile above sea level. North America averages 2300 feet; Europe averages only 1150 feet and Asia, the highest of the larger continental subdivisions, averages 3200 feet. The highest point on the globe, Mount Everest in the Himalayas is 29000 feet above the sea; and the greatest known depth in the sea is over 35000 feet or exceeds 12 miles. The continental masses and the deep-sea basins are relief features of the first order; the second order. The lands are unendingly subject to a complex of activities summarised in the term erosion, which first sculpts them in great detail and then tends to reduce them ultimately to sea level. The modeling of the landscape by weather, running water, and the other agents is apparent to the keenly observant eye and causes thinning people to speculate what must be the final result of the ceaseless wearing down of the lands. Long before there was a science of Geology, Shakespeare wrote, -the revolution of the times makes mountains level.​

Answer 1

Answer:

the revolution of the times as used in the final sentence means