Your uncle was just admitted to the hospital with a blood pressure of 220/145. after a battery of tests, he was told he has essential hyptertension. in his history, it is noted that he is a smoker, obese and works a very stressful job. the physician talks to him about quitting smoking, losing weight and managing stress. why? what are the physical things that happen to the body that can contribute to hypertension as a result of those risk factors?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities