Answer:
my guess would be S<u>uper</u> salty secretion
It depends on the latitude where you measure it.
It's about 69 miles on the equator, and it shrinks to zero at the poles.
In general, at any latitude,
Distance covered by 1 degree of longitude =
<em> (69 miles) x [ cosine(latitude where it's measured) ]</em>
The correct answer is building new houses
There would not be enough oxygen to breathe
