A) To decrease opportunitiesfor the shoplifting of these high revenue items. Stores only care about the bottom line. I worked loss prevention for years and cigarettes were a high theft item so they did just this. I hope its the answer the test is looking for
When there is a very low number of T cells in the blood.
Oxygenated (arterial) blood is bright red, while dexoygenated (venous) blood is dark reddish-purple. The difference is color results from the electronic state of the iron ion (ferrous vs ferric), which in turn influences the π → π* and n → π* electronic transitions of porphyrin and hence its optical characteristics.
