Which of these statements expresses a scientific theory? A. All the tissues that make up animals consist of cells.
B. The larger of two cells probably contains a nucleus.
C. Cells are the basic units of life.
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D. A material that consists of cells came from a living organism.

Name the type of chemical that speeds up digestion

Solutions to environmental problems in europe must

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.