An infant loses interest in a toy train set every time the train disappears into a long tunnel. this infant must be in piaget's stage of development.

well since twins have about the same dna they dont have one think in common which is the figer print. nobodys fingerprint is the same. if your using twin you would most likely get around the same results for both of them because of the genetics.. i hope this

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer