Like many sophomores, Miguel initially struggled with organic chemistry when he tried to learn everything on his own. On the advice of a friend, he joined a study group that met three days a week to work on homework problems and study for exams together. It took a lot of effort, but Miguel never missed a study group, and all the hard work paid off when he got an A- in the class. To reward himself, Miguel went to a concert after the semester was over. This is an example of:

Why girls are tan and why they fake tan

An 80-year-old woman comes to the urgent care clinic with dyspnoea on exertion. on physical examination, her blood pressure is 100/70, and her pulse is 75. she has no pulsus paradoxus. her jugular veins are distended, and she has distant heart sounds. in addition, she has extra third and fourth heart sounds. her liver is enlarged, and she has pedal oedema. she has occasional premature ventricular contractions on her electrocardiogram. a chest x-ray reveals clear lung fields with a dilated cardiac silhouette. her echocardiogram reveals ventricular walls with a "speckled pattern". which of the following is the most likely diagnosis? - alcoholic cardiomyopathy- amyloidosis- haemochromatosis- tuberculosis- viral myocarditis

Which is not an effect of aging? secondary sex characteristics appear bones shrink and become more brittle skin becomes drier and less elastic hearing and vision become less sharp