A researcher in Broward County, Florida designed an investigation to test what effect eating different types of food would have on blood insulin levels. She selected 10 male
subjects who were all 25 years of age and in good health. The experiment took place
over 3 days. At 8:00 a. m. on each day, the subjects ate a meal consisting of only 1 type
of food. They had their blood insulin levels measured after consurning the meal. On Day
1 they ate a high fat diet, on Day 2 they ate a high protein diet, arnd on Day3 they ate a
high sugar diet.
What is the independent variable in this experiment?

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

Anurse is preparing to administer ampicillin 500 mg in 50 ml of dextrose 5% in water (d5w) to infuse over 15 min. the drop factor of the manual iv tubing is 10 gtt/ml. the nurse should set the manual iv infusion to deliver how many gtt/min? (round the answer to the nearest whole number. use a leading zero if it applies. do not use a trailing zero.)