A 60-year-old woman comes in for her annual physical. Even though she usually has a lot of energy, she has been unusually tired for the past few weeks. She occasionally feels dizzy and she is finding it harder to sleep through the night. Her ankles and feet are swollen and her face looks a bit puffy. She frequently feels a burning pain in her lower back, just below the rib cage. She has noticed that her urine is darker in color lately. Preliminary workup shows she has elevated blood pressure. Some red blood cells are present in her urine.

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

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above