Describe an environmental factor that could
influence natural selection and decrease genetic
diversity. Pick a specific example to illustrate your
point.

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.

its temperature is increasing. this causes molecular vibrations to increase.