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WorksheetsOceans! C1.1 Teens
Total questions: 7
Worksheet time: 4mins
The oceans cover just over __________ of the planet. They are the Earth’s largest life-support systems.
30%
70%
About _______ of the oxygen we breathe is produced by the oceans.
70%
45%
An estimated _________ of all life on Earth is found in the oceans.
30%-50%
50%-80%
60%-90%
The world’s fisheries provide employment for ____________ people and food for billions.
3.7 million
37 million
307 million
The sea level has risen ________ over the past 100 years.
10 - 25cm
25 - 50cm
The largest living structure in the world is the Great Barrier Reef - a coral reef which measure around _________ kilometres in length.
500
2,600
1,700
There are many endangered species including whales, dolphins, sharks and turtles. As many as ______________ are killed each year for their meat.
1 million
100 million
