What is the major difference between pulmonary veins and most other veins? a. they have a corresponding artery. b. they have a thin, smooth muscular layer. c. they have internal valves but no elastic tissue. d. they carry oxygenated blood to the heart.

True or false: determining the source and motive of an ad for a health product will you decide whether the ad is a reliable source of health information.

Social sciences are the observable facts or events that involve human society. select the best answer from the choices provided t f

Lina went in camping woods. while camping, she accidentally touched a strange planet. her hand immediately started itching, and her skin erupted in hives. after she gets home, her grandmother cooked some oatmeal, wrapped it in a cloth, and put it on lina affected hand. lina’s grandmother followed a traditional what remedy.