why we have blood?

why our blood is color red unlike the green blood? why we will die if no more blood?what is the meaning of blood?
Answer:
Blood is but one of the liquids circulating our body. Blood is important because it is the main way of carrying nutrients from the producing cells to the consiuming cells, carrying oxygen from the lung to every cell of the body. the reason we have blood is because we are cellular based organism. we are defined by our cells. our cells are mainly made of liquid, so anything that would carry nutrients to those cells would have to be liquid.so far we know not of any living organisms that do not have a type of liquid that acts like blood.cells have celluar liquid
plants have seva
insects have a type of blood
animals have blood
humans have blood

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so vampires will have something to eat?

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why will we die if we have no blood? well...for the same reason we would die if we had no head...or no brain...or no heart. i'm afraid that's a stupid question, coz we wouldn't just die if we had no blood, we'd die if we were missing any other vital organs. we have blood because...we just do.

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ok. this is how it works. red blood cells (why blood is red) have one duty. to carry oxygen to all the different parts of your body. red blood cells contain hemoglobin which is the "binder" that grabs oxygen as the blood passes through your lungs. the oxygenated blood then goes throughout your entire body (because all individual cells heart, brain, liver, ect. require oxygen in order to stay alive). when you don't have enough blood it just means that your body is no longer getting the oxgen it needs, irregardless of whether or not you have lung problems.
i hope this answers your question.

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the color of blood is due to HEMOGLOBIN.or it will b white in color like some insects.
we ll die cos our bdy cells will not get any nutrition n hence they ll die n hence we naturally.
meaning for blood...i ll tell u if u tell me the meaning for body???

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blood is red because of the erythrocytes, erythro is latin for red, cyte for cell. erythrocytes are red clood cell and the yare red due to the oxygen the ycarry. Blood without owygen is blue, but you never see it because it's in your weins. The purpose of blood is to carry oxygen to all the organs of the body, because that is what keeps them going. Also blood carry leukocytes and phagoctes, which fight off disease,

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