Why do we hold on to the people that promises us lies?

Which two levels of the spine that can undergo flexion and extension?

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.

Why do you need two different circuits of blood vessels in your body?