Compare the productivity of terrestrial and aquatic ecosystems against the percent of earth’s surface area they occupy..

It is estimated that around 2/3 (72%) of the Earth's surface is covered by water, in which the aquatic ecosystems are present. The aquatic ecosystem supports almost 1/3rd of the primary productivity.

The lands are present in 28% of the earth surface, but the number of producers present  on the land accounts for almost 2/3rd of the total primary productivity. Hence, it can be said that the terrestrial ecosystems have more productivity than the aquatic ones.

characteristics of hydrocarbons