Which scientific claim can be made? Songbird numbers will increase due to the effects of climate change increasing global temperatures. Songbirds appear more often in April and May. With an increase in construction, songbirds will move from one neighborhood to another. A study by Dr. Birde showed that the number of songbirds in her yard increased due to a modified food source.

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.