Threats to Coral Reefs

Which of these is NOT a factor related to coral bleaching

• Pollution and climate change are two of the causes

• Coral bleaching occurs when the zooxanthellae leaves the coral

• Corals can never gain zooxanthellae back

• Bleaching occurs more often in shallower waters

The largest episode of coral bleaching occurred in what year?

• 1998

• 2001

• 1988

• 2018

Which area of the world was NOT affected by the coral bleaching episode of 1998?

• South East Asia

• East Africa

• Atlantic Ocean

• Arabian/Persian Gulf

How much of the world's area of coral reefs were severely damaged in 1998?

• 26%

• 14%

• 16%

• 38%

The report from 2004 estimated what proportion of the world's coral reefs are damaged beyond repair?

• 1/5

• 2/5

• 1/4

• 1/2

Which two of the causes for concern mentioned below, are related to economic concern?

• Tourism revenue

• Damage to ecosystem

• Lack of protection for the coastline

• Lack of fish

In the 2004 global assessment, which was identified as being one of the main cause of reef decline?

• Tourism

• Climate change

• Using corals for items such as jewellery

• Seafood

According to the 2004 report, in which area are reefs most damaged?

• Caribbean

• South East Asia

• Africa

• Persian Gulf

Outline in your own words, how global climate change will cause irreparable damage to coral reefs

According to the 2011 assessment, what percentage of coral reefs are under threat from local sources?

• 45

• 83

• 60

• 72