A second is a measure of a time interval that has no relevance to an area measurement.
Deserts cover about 33% of the total land mass of the earth.
Fog
It can cover an entire city or more if it's severe.
Deserts, by definition, cover 14% of the earth's land area. Non-arable land, however, makes up a large percentage.
they are called layers
The oceans cover an area of 71% of the Earth's surface.
30%
Nearly one third of its total area
It covers about 71% of the Earth's surface.
hill
Nearly one third of its total area
a plateau