8. Which important mineral is part of hemoglobin, the molecule which helps transport oxygen throughout your body?

1)Iron

2)Phosphorous

3)Niacin

4)Potassium

Which statement supports the principle ideas of jean piaget's philosophy? adults should not interact with teachers. children are best educated through standardized training. adults do not think better than children, but they think differently. children should not form hypotheses until they are certain their findings will be correct.