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This indicates a familiarity with
large-scale concepts of biology in general, and the way that these
biological needs can be met by systems other than the classic
terrestrial pattern (i.e., carbon-based chemistry, consuming oxygen and
water). Creatures that do not follow these patterns are rare indeed, and
are not covered by the normal
Biology skill.
A character with Xeno-Biology
skill can puzzle out the workings of one of these completely alien
life forms, and eventually learn how to keep them alive, breed them,
etc.
Xeno-Biology skill is not
necessary to understand the function of an Aslan, Droyne, K'kree,
Vargr, or Hiver. All of these races have anatomy and metabolisms
which follow the same pattern as those of humans, and so
Biology skill is
sufficient to understand them.
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