nikhilsrl wrote:
Hey I posted the same passage here after you, sorry about that.
I have doubts about qn 1 here. I felt that A is a valid answer for this.
Choice A mentions that Australia has moved from one hemisphere to another. Now this is not mentioned in the passage. The passage says "after finally cutting the umbilicus with Antarctica, it slowly drifted
northwards". So the passage only says Australia moved north not that it moved from one hemisphere to another.
i think u missed the first line "Far from being fixed on Earth, scientists now know that Australia has
wandered over the face of the planet for billions of years, sometimes
lying in the northern hemisphere, sometimes in the south."
the answer is B because passage mentions "botanists have recently completed a catalog of Australian plants, in
which
they list 18,000 species. Their taxonomic work over recent years
has resulted in a 50 percent increase in the number of species in the
groups examined. Yet they estimate that a
bout 7,000 undiscovered
plant species still exist in Australia."
although 7000 is a big number, but 18000 species have already been discovered.so most of the species have been discovered.
in 3rd question A can be ruled out because "In scientific disciplines from reproductive physiology and
evolutionary biology to medicine, Australia‘s native species are hailed as
a unique and priceless heritage. "
also there is no mention about solar energy and hydroelectric power.