it is sent down to Earth in due measure. This is mentioned in Surah
Zukhruf as follows;
"It is He who sends down water in due measure from the sky by which We
bring a dead land backto life. That is how you too will beraised (from
the dead)." (The Quran, 43:11)
This measured quantity in rain has again been discovered by modern
research. It is estimated that in one second, approximately 16 million
tons of water evaporates from the Earth. This figure amounts to 513
trillion tons of water in one year. This number is equal to the amount
of rain that falls on the Earth in a year. This means that water
continuously circulates in abalanced cycle, in a "measure". Life on
Earth depends on this water cycle. Even if people used all the
available technology in the world, they would not be able to reproduce
this cycle artificially.
Even a minor deviation in this equilibrium would very soon giverise to
a major ecological imbalance that would bring about the end of life on
Earth. Yet,this never happens, and rain keeps falling every year in
exactly the same quantity just as revealed in the Quran.
Every year, the amount of water that evaporates and that falls back to
the Earth in the form of rain is "constant": 513 trillion tons. This
constant amount is declared in the Quran by the expression "sending
down waterin due measure from the sky". The constancy of this quantity
is very important for the continuity of the ecological balance, and
therefore, life.
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