The map here shows South America and the surrounding oceans. Recall that the Mid-Atlantic Ridge is located east of South America. Can you find an ocean trench? As a class, use these features to infer the motion of the plates. Next, take a close look at the continent. Discuss what might explain why the west coast has mountains while the east coast is more flat.

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.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: