Which one of the following ecosystems covers the largest area of the earth's surface?

Which one of the following ecosystems covers the largest area of the earth's surface? Correct Answer Marine Ecosystem

The water part of the earth occurs 75% of the total earth's area.Rest part is the land area. So, the marine ecosystem occurs the largest ecosystem in our planet as it is also the largest part of our planet.

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Which of the following ecosystems covers the largest area of the earth's surface ?
A satellite beam that covers almost 42.4% of the earths surface.