The biome in which polar bears are found is very cold.
<span>What treatments are for depression
?
</span><span>The management of depression based on two complementary pillars: psychotherapy and drug treatment.
The approaches are different depending on the depressive syndrome and its severity.
There is also the practice of a sport, meditation, relaxation can be a supplement.</span>
Here's a hyperlink
https://www.brainpickings.org/2012/09/17/the-meaning-of-life/
C. moving food through the body and transporting air through the body
