The charts below show how global water resources are distributed. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The charts provide information on the natural sources of water available on our planet and examine their distribution across different types of water and different regions of the world. Overall, almost all the water on Earth resides in the oceans; freshwater comprises only a low percentage of the total water resources and is mainly frozen or located underground. Moreover, the tiny amount of fresh water that is accessible on the surface is distributed unevenly across the continents. About 97% of the water on Earth is salt water and only three percent is freshwater. Furthermore, over two-thirds of the freshwater is trapped as ice in glaciers and polar ice caps. The remaining unfrozen freshwater is found mainly as groundwater, with only a small fraction of 1. 2% present above ground. With regard to freshwater found on the surface, it is also called renewable freshwater and is represented by lakes, rivers, and other sources. The supply of this water varies greatly from continent to continent, with the largest resources concentrated in South America and Asia (around 17 and 15 thousand square kilometers respectively). To compare, the resources of the other four continents are at most half the size of those in South America.