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1.what is the living beings in outer space known as ? 2.which is the biggest star in our galaxy? 3.name the only organ in our body which is not caught by the disease of cancer? 4.what is the amount of blood in a human body?
1.Extraterrestrials.
2. Red hypergiant star is by far the largest known. It has an estimated radius between 1800 and 2100 times the radius of our Sun.
3.Heart.
4.The amount of blood in our body depends on our size and the altitude at which we live. An adult who weighs 160 pounds (73 kilograms) has about 5 quarts (4.7 liters) of blood. An 80-pound (36-kilogram) child has about half that amount, and an 8-pound (3.6-kilogram) infant has about 81/2 ounces (250 milliliters). People, who live at high altitudes, where the air contains less oxygen, may have upto 2 quarts (1.9 liters) more blood than people who live in low regions.


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