PLEAS HELPOP Only 3% of the water on Earth is fresh water. Of this 3% of fresh water, more than half is not available for
human use. Most of this is not available because...

It is frozen

It is polluted

It is too salty

It is in aquifers

Its frozen

Explanation:

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.