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Question 18N.3.SL.TZ0.a

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.3.SL.TZ0.a
Level SL Paper 3 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
18N.3.SL.TZ0.a

When water rises above a certain temperature, coral bleaching may occur. The coral expels Zooxanthellae algae living in its tissues, leaving the coral a white colour. The graph shows how the water temperature is changing in the coral reefs surrounding the Cayman Islands.

State the trend in temperatures from 1982 to 2014. 

[1]

Markscheme

«overall» water temperature increasing
OR
the range of fluctuations increases ✔

Do not accept the trend is fluctuating

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