Grasslands are areas dominated by grass. They occupy about 20% of the land on the Earth's surface. Grasslands occur in both tropical and temperate regions, where rainfall is not enough to support the growth of trees.
A pond ecosystem refers to the freshwater ecosystem, where there are communities of organisms that are dependent on each other and the prevailing water environment for their nutrients and survival.
Grassland ecosystem is a terrestrial ecosystem and pond ecosystem is an aquatic ecosystem.
Therefore, abiotic and biotic components would be different in both ecosystems.