Gillian is easily impressed by make-up which claims to be manufactured with the use of crystals, but without really wondering about why that would improve it. As teens move through adolescence, their capacity for critical thinking improves. What area of the brain is thought to be responsible for this change?

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answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;