Which structure of the excretory system in humans is responsible for converting ammonia into urea?

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Which statement describe events that occur during interphase?

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.