Final answer:
To complete the paragraph, the prepositions are 'around,' 'to,' 'particularly,' 'to,' 'over,' and 'of.' Moreover, sea levels are rising due to the melting glaciers and the expansion of water as it warms, with significant contributions expected from the Antarctic and Greenland ice sheets.
Step-by-step explanation:
To complete the paragraph using prepositions, we would write: Sea levels (a) around the world are all set (b) to rise faster, (c) particularly since the Greenland ice sheet has started (d) to melt. Scientists have found that (e) over five million tons (f) of ice have already melted.
Discussing the rising sea levels, research has shown that there was much more water in glaciers than there is today, causing sea levels around 100 meters lower historically.
Over the past century, sea levels have been rising due to melting glaciers. If Earth's climate continues to warm, this melting will cause an additional rise in sea level.
The Antarctic and Greenland ice sheets hold the vast majority of the Earth's permanent ice. The melting from these two sources alone could contribute up to about 7.4 meters of sea level rise from Greenland and 58 meters from Antarctica. Other glaciers contribute a smaller but significant amount. In addition to the melting ice, the natural expansion of water as it warms plays a role in sea level rise.
The global sea level has been rising at a rate of approximately 1.8 mm per year on average, with more recent rates between 2.9 and 3.4 mm per year. This is due to both the melting of land ice and the thermal expansion of water in response to rising temperatures.