答案和出处
：
1
scuba
That would be
scuba diving
on the Great Barrier Reef off the coast of Australia.
2
scribbling
But tourists are actually damaging a number of important sites around the world
–
tramping around, dropping litter,
scribbling graffiti
3
coalmine
A giant coalmine
has just been
given the go-ahead by
the Queensland government even though scientists warn it may damage the Reef.
4
habitats
any type of
industrial activity
can harm them by, for example,
encroaching on
the natural habitat
of animals and plants living there, or by polluting the water that flows into the site.
5
0.5%
The interesting thing is that world heritage sites only constitute 0.5% of the Earth's surface
–
so why can't people
do their mining and industrial development on
the remaining 99.5%!
6
restore
So it's all about getting the balance right between
generating money
to
maintain and restore the sites
and
minimizing the impact of tourist activities.
7
So UNESCO is working to direct governments
, site manager
s and visitors towards
sustainable tourism practices
i
n order to keep our world's natural and cultural heritage safe for future generations.
