Marine Ecosystems: Coral Reefs (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What percentage of Earth's surface do marine ecosystems cover?
What percentage of Earth's surface do marine ecosystems cover?
70%
What material are coral reefs primarily made of?
What material are coral reefs primarily made of?
Calcium carbonate
How long is Australia's Great Barrier Reef?
How long is Australia's Great Barrier Reef?
2,000 km
At what rate do deep-sea cold-water corals grow per year?
At what rate do deep-sea cold-water corals grow per year?
5-25 mm
What minimum water temperature do tropical coral reefs require year-round?
What minimum water temperature do tropical coral reefs require year-round?
Above 16°C
Between which latitudes do tropical coral reefs occur?
Between which latitudes do tropical coral reefs occur?
30°N and 30°S
What do zooxanthellae algae provide to coral polyps?
What do zooxanthellae algae provide to coral polyps?
Nutrients via photosynthesis & colour
What typically causes coral bleaching?
What typically causes coral bleaching?
Elevated water temperatures
Which reef type has no lagoon separating it from the shoreline?
Which reef type has no lagoon separating it from the shoreline?
Fringing reef
How many hard coral species are found in the Belize Barrier Reef?
How many hard coral species are found in the Belize Barrier Reef?
70 species