This one-page card has no space for stamps or visas. A passport card is an acceptable form of entrance at the Bahamian and Jamaican borders. It is also acceptable for re-entry to the United States at sea borders.
The term âblue bloodâ means a person of noble birth. It is an idiomatic expression that originated in Spain, referring to the paleness of aristocrats who had never married into Moorish or Jewish families. In medieval Europe the nobility did not work for a living, and so remained untanned by the sun and wind of the fields.
Human blood is red because of the iron in the haemoglobin. This gives red blood cells their red colour. Veinous blood is much darker than arterial blood, and your teacher is right that oxygenated (arterial) blood is 'redder' than deoxygenated (veinous) blood. However, human blood is not blue. Some animals do have blue blood though.