How are jetties and groins similar in how they manage beach erosion? (1) Both are hard structures that keep sand on the beach.
Both use vegetation to keep sand on the beach.
Both are soft alternative strategies that use barriers to keep sand on the beach
Both use beach nourishment to replenish sand on the beach.

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.

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