What is the most important reason for exploring the exploring the Earth's oceans? A) because they are more interesting than space
B) for financial gain
C) to ensure the survival of our species
D) to secure funding for research ​

C) to ensure survival of our species

C) to ensure the survival of our species

Explanation:

The ocean can tell use many different things that can attribute to the survival and safety of our species. Exploring the ocean can tell us, how we are being affected by Earth's environment, also including climate, earthquakes, tsunami and many more.

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