1). What % of the surface of the earth is covered by water!
12.5%
75%
3%
25%
2). What % of the surface of the earth is covered by unsable land, meaning we can live on it and farm it?
12.5%
75%
3%
25%
3). What % of the water of earth is unsable by man (fresh)?
12.5%
75%
3%
25%
4). What % of the surface earth is covered by land
12.5%
75%
3%
25%
