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 ?

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth