[Solved] Which of the following statements about world population trends is true? A) In general, countries that have higher stages of development experience faster rates of growth than less-developed countries. B) The extent to which a country's population is clustered around urban areas does not vary much from country to country. C) People are moving from rural areas into urban areas. D) The trend toward urbanization has made companies less interested in international markets. E) All of these statements about world population trends are true. Mucus: A sticky, slimy substance produced by mucous membranes and glands designed to moisturize and protect certain parts of the body, such as the nose and throat. Specimen Testing: The analysis of a sample of body tissue or fluid to diagnose or monitor health conditions. Microscopic Examination: The analysis of small objects or structures that cannot be seen with the naked eye, using a microscope. Epithelial Cells: Cells that line the surfaces of the body, such as skin, blood vessels, urinary tract, and organs, providing protection, absorption, and secretion functions.