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YDT • İngilizce 2. ADIM • 4. DENEME

60. Technically, no planet besides Earth is known to 61. People have had a significant negative impact on
have hurricanes. This is partly due to the definition fish populations all around the world. According
of a hurricane, which is not only a big storm but to recent studies, 66 per cent of the world’s marine
also a cyclone powered by convection processes fisheries are in trouble owing to overfishing.
unique to warm-water oceans. Massive storms do ---- The reason for this is that fishermen all over
exist on other planets, however. Mars is known to the world have always preferred large predatory
experience colossal dust storms that can reach fishes. As a result, populations of these fishes
speeds of up to 100 km per hour. ---- It is believed have plummeted. In addition to decreasing the
that Jupiter’s Great Red Spot, a storm larger than number of each species, people have altered the
Earth, is an anticyclone with wind speeds of 400 food webs of ocean communities by removing top
km per hour. The winds are even faster in the predators.
hexagonal storm at Saturn’s North Pole, which
resembles a hurricane. A) In order to make fisheries more profitable and
allow fish stocks to be sustainable, global fishing
A) Also, some extraterrestrial storms have many needs to be reduced by roughly 50 per cent.
similarities to hurricanes on Earth and can be B) Therefore, losses of fish stocks will influence fish
considerably more powerful. prices, which are already rising in response to
B) According to NASA, the size of the storms often increased demand and growing fishing expenses.
depends on the size of the planet; for example, C) However, when people start fishing in a new area,
Saturn has the biggest storms. the number of fish they catch usually drops by
C) The demand for moisture explains why massive, about 80 per cent within the first 15 years.
hurricane-like storms do not appear to form on D) In fact, the near-extinction of species and other
Venus or Mars. impacts of human actions on marine ecosystems
D) While the Sun provides most of the energy that are only a few of the changes we are making to
drives Earth’s hurricanes, this may not be the the biosphere.
case for Jupiter and Saturn. E) Besides, over the last 45 years, the catch has
E) Mars is notorious for its severe dust storms, included fewer large predatory fishes and more
which can sometimes be viewed by telescopes invertebrates and small fishes that feed on
on Earth. plankton.

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