Question

Which is the largest ecosystem on the earth​

Answer 1

"The World Ocean" is the largest existing ecosystem on our planet. Covering over 71% of the Earth's surface, it's a source of livelihood for over 3 billion people.

Answer 2

Answer:

The world ocean / hydrosphere is the largest ecosystem on the earth. It covers about 71% of earth total surface. About 3 billion of people is dependent on it for the survival of their life.