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15
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The oceans cover just over... of the planet. They are the Earth's largest life-support systems.
30%
70%
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thief
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5
10
15
20
25
×
seesaw
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×
shark
Other team loses 25 points!
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×
thief
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5
10
15
20
25
15
×
About ... of the oxygen we breathe is produced by the oceans.
45%
70%
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thief
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5
10
15
20
25
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rocket
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gift
Win 25 points!
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banana
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15
×
The world's fisheries provide employment for ... people and food for billions.
3.7 million
37 milion
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15
×
An estimated ... of all life on Earth is found in the oceans.
30-50%
50-80%
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15
×
The sea level has risen ... over the past 100 years.
10-25 cm
25-50 cm
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15
×
Around... of the ocean receives protection through marine reserves, no-fishing zones, etc.
10%
3%
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15
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There are many endangered species including whales, dolphins, sharks and turtles. As many as ... are killed each year for their meat.
100 million
10 million
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15
×
The largest living structure in the world is the Great Barrier Reef - as coral reef which measures around ... kilometres in length.
2,600
500
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