However, the water resources, which are at the root of all life, are being severely depleted due to the explosion of population in every part of the world and (also due to) long term draught caused by climate change.
In the sentence above, does it look better to include "also due to" or omit it?
REMINDER: NOT A TEACHER
(1) May I most respectfully remind you that a few (very few!) teachers here in the
United States say that "due" is an adjective. Thus, they would recommend a
sentence something like:
The root of the severe depletion of water resources is due to the explosion of
(2) If you wanted to keep your sentence as it is, then these few strict teachers
would recommend "...are being severely depleted because of the explosion of
(3) NEVERTHELESS, most English teachers (and tests) now accept "due to"
as a preposition. The strict point of view has lost the battle.