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The bacterium seems capable of tapping a wide
variety of energy sources. Heat and water are
diverse enough, but it also finds the rich sludge
used for nano-construction highly desirable. Fortunately
the same safe guards that prevent marines from
automatically accessing these stores thwart the
Kharaa too. Unfortunately, the aliens seem quite
prepared for this sort of obstacle. Gorges
can build resource
chambers atop resource nodes, that draw the
sludge up and digest it. These chambers appear
to have once been a species, much like the hive.
What these resource chambers could have been used
for before the Kharaa encountered us is a perplexing
mystery. But they convert the sludge into a usable
form, just as our resource towers do.
As a result, marines and Kharaa end up fighting
for the same resources. Defending these resources
is vital to the Kharaa, second only to protecting
their hives.
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