Sarah is quite proud of her slender, model-like figure and boasts that she does not have an " ounce of excess body fat " Lauren in contrast, is grossly overweight. She complains of feeling hot most of the time, and on a hot day, she is miserable. Sarah generally feels chilled except on very hot days. Explain the relative sensitivity to environmental temperature of these two women on the basis of information you have been given in the Organic Compounds section of chapter 2

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

As studied this week in the cell cycle, we saw how a cell moves through its life with a plan. as you transition from a student at uma to a valued member of your chosen career field, what will you put into place in your life to manage and to fit the new responsibilities of your career into your current life?