Orangutans in
Borneo are at risk for extinction. Their dietary habits may be the reason for
their decline and the way they cope with these hard times allow scientists to
use this as a comparison to early human development. The orangutans live in an
environment where the soil in not very fertile and only produced fruit during
certain years. When fruit isn’t available they have to live off on things like
tree bark and during the hardest times they have to eat very hard seeds and
have adapted to this practice. These patterns over the past 400,000 years show
that evolution favors adaptations used during critical periods, even if not used
often.
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