Coral bleaching – level 2
The Great Barrier Reef is 1,931 kilometres long, and it is along Australia's northeast coast. It is the world's largest living ecosystem and it is in danger.
This year is very hot, partly because of the current El Niño climate cycle. The water temperature is rising which is very bad for corals. The coral is under stress and is driving out the living algae. Only the coral’s “rock” stays behind. Then the coral is dead. This is called bleaching.
The Great Barrier Reef is being bleached. People filmed 500 coral reefs from the north of Australia to Papua New Guinea, and the video showed that 95% of them are white and yellow.
Difficult words: reef (a line of coral, rock or sand in the water), coast (a part of the land which touches the sea), singular alga, plural algae (a simple aquatic plant).
You can read the original story and watch the video in the Level 3 section.
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