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Oceans 10 ~ How well do you know what lies beneath quiz?

We love our oceans but you may be surprised to learn that it is a largely unexplored part of our earth. The importance of oceans to life on earth is unquestionable and it is filled with a magnitude of wildlife, the majority of which are yet to be discovered. On June 8th we will celebrate World Oceans Day so this is a good time to brush up on some ocean facts. An understanding of the magnificence and value the oceans is to our lives on earth is critical to preserving it for future generations. Some 8 million tons of plastic end up in the oceans every year killing valuable ocean life and damaging our eco-systems.

This Oceans 10 quiz has 10 important facts about the oceans which make up the majority of the earth’s surface.

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  • Oceans account for how much of the earth’s land mass?

    • 50%
    • 70%
    • 90%
  • It is the largest living structure on earth

    • The Great Barrier Reef
    • Pando(Trembling Giant)
    • Giant sequoia
  • How much of earth’s living species are in the ocean?

    • 35%
    • 94%
    • 78%
  • This much of the planet’s oceans have been explored so far

    • More than 54%
    • 30%
    • Less than 5%
  • The world’s longest mountain chain is found in the ocean

    • True
    • False
  • The world’s largest ocean —— takes up 30% of the earth’s surface

    • Atlantic ocean
    • Pacific ocean
    • Indian Ocean
  • It is the deepest area of the earth’s oceans

    • The Marina Trench
    • The Tonga Trench
    • The Philippine Trench
  • There are more historic artifacts in the oceans than the world’s museums combined

    • True
    • False
  • How much of the oxygen we use is produced by marine life?

    • 70-80%
    • 25 – 35%
    • 55-60%
  • What are brackish seas?

    • Salt and freshwater mixed
    • More salty than freshwater but less salty than salt water
    • Lower salt levels than freshwater

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