Each red blood cell carries about 250 million molecules of hemoglobin. how many molecules of oxygen could a single red blood cell deliver throughout the body if every hemoglobin molecule attached to four oxygen molecules? a. 1 trillion molecules of oxygen b. 1 x 10 to the power of 8 molecules of oxygen c. 1 billion molecules of oxygen d. 1 x 10 to the power of 10 molecules of oxygen

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error? the object is an asteroid, not a dwarf planet. the object is a moon, not a dwarf planet. the object is not a dwarf planet because it travels with other objects. the object is not a dwarf planet because it is round.