2. • The Great Barrier Reef is the largest reef system in the world and widely considered
one of the seven wonders of the natural world.
• It is made of Thousands of reefs.
3. • The Great Barrier Reef is in Australia’s north-eastern coast.
4. • Coral reefs are unique ecosystems that
teem with life - but this situation is changing.
• An increasing amount of green house
gases is warming up oceans.
• Warmer sea waters and ocean acidification
both pose a serious threat to the worlds
coral reefs.
5. • Ocean acidification is the evil twin of climate change.
• Some scientists predict that, as a worst-case scenario, sea water will have a pH of
7.8 by the end of the century.
• An ocean pH of below 7.95
6. • Coral reefs are living communities of tiny animals called polyps.
• Corals have A clever system for producing their own food.
• Tropical corals grow very very slowly- Around 1-3 centimetres a year.
7. • Global warming caused
by us has raised the
ocean temperature
0.1f .This warming has
occurred from the
surface to a depth of
about 2,300 feet .That is
really deep!!
Editor's Notes
If you are on skooville my username is Jessica71
Hi reefs are under threat. You can help by using less stuff with gases.
