A45-year-old female with a past medical history of rheumatoid arthritis presents to the emergency department with right calf pain and swelling of sudden onset. she denies fever, chills, dyspnea, chest pain, or history of trauma to the leg. she has smoked a half pack of cigarettes daily for 20 years. her only medicine is methotrexate for her rheumatoid arthritis. on physical examination, her temperatureis 37.0°c (98.6.f), pulse is 70/min, blood pressure is 140/80 mmhg, and respirations are 14/min. her bmi is 30 kg/m2. examination of the right calf reveals mild redness, warmth and tenderness. whichof the following is the most appropriate next step in the management of this patient? a. initiate warfarin therapyb. initiate heparin therapyc. perform compression ultrasonographyd. perform contrast venographye. obtain blood cultures and start antibiotics

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. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

List charasteristics of athenosphere

This is the amino acid cysteine. circle the amine group, put a box aroundthe carboxylic acid group and use a different colored pencil/pen to circle the sidechain (r group). h o | ||nh2— c- c-oh | ch2 | sh