What percentage of the world is made up of

71%

Explanation: In simplest terms, water makes up about 71% of the Earth’s surface, while the other 29% consists of continents and islands. To break the numbers down, 96.5% of all the Earth’s water is contained within the oceans as salt water, while the remaining 3.5% is freshwater lakes and frozen water locked up in glaciers and the polar ice caps.

Hope this helps you out ;P

To put it simple the answer is 71 percent

d. making up measurements to record.