Shampoos and hair often claim to have nutrients and vitamins your hair must have to grow and be healthy. A. What is the composition of the hair shaft onto which shampoos and conditioners are applied? B. Taking into account the composition of the hair shafts, do you think these vitamins and nutrients will be beneficial? Why or why not ?

Been sitting here trying to take this test and don't know this answer! place the events of a feedback mechanism associated with body temperature in the correct order. ·nerve cells send message from skin to the brain ·body returned to normal temperature around 98.6 degrees f ·temperatures regulation center in the brain sends out signals ·body temperature exceeds 98.6 degrees f ·sweat glands throughout the body activate to cool off skin surface it is a 1 through 5 question in biology!