Embolism occurs when a collection of material such as a clot or plaque is carried through the circulatory system and becomes lodged in a vessel in such a way that it blocks blood flow. Cerebral embolism refers to blockage of a cerebral (brain) vessel by an embolus (clot or plaque). This is one form of stroke.
Two years ago, the yearly cost of a Prime membership increased from $79 to $99. In October of 2013, the minimum amount required for non-Prime members to receive free shipping went from $25 to $35. Now, the price has been raised again, to $49.
Logistics costs relate to the charges for various transportation methods, including train travel, trucks, air travel and ocean transport. Additional logistics costs include fuel, warehousing space, packaging, security, materials handling, tariffs and duties.