An area of a mountain has rocks with small cracks between them in the winter water flows into the cracks and freezes the expansion of water when ice forms causes the rocks to break down into smaller pieces is this and example of weathering or is it an example of erosion? how do you know?

Which measure of an earthquake depends on how close you are to the focus?

Approximately what wavelength of light is best absorbed by chlorophyll 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.