Is this an explanation of gaseuos exchange? Movement of gasses between respiring cells and environment.
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Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Asegment of dna that codes for rna and a protein is a

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.