How many cubic kilometers of water reside within groundwater? How many more times abundant is groundwater than water on land? These are the figures.
Groundwater = 8.4
(Each unit is one million cubic kilometers x 1,000,000 km3)
Water on land = 0.2
To find out how many cubic kilometers of water reside within groundwater, you need to multiply the value of groundwater by one million. From the figures you provided, groundwater is 8.4 units.
Groundwater in cubic kilometers = Groundwater (in units) x 1,000,000 km³
Groundwater in cubic kilometers = 8.4 x 1,000,000 km³
Groundwater in cubic kilometers = 8,400,000 km³
Therefore, there are approximately 8.4 million cubic kilometers of water within groundwater.
To determine how many more times abundant groundwater is than water on land, you can calculate the ratio between the two. Divide the value of groundwater by the value of water on land.
Abundance Ratio = Groundwater / Water on land
Abundance Ratio = 8.4 / 0.2
Abundance Ratio = 42
Therefore, groundwater is approximately 42 times more abundant than water on land.