What percentage of china's labor force deals with agriculture?

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

How can an organ, such as the lungs, work for multiple body systems?

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.