[Solved] Which of the following, according to a recent report to Congress, has now surpassed international drug trafficking as a terrorist financing enterprise? A) cargo heists B) cybercrime C) weapons manufacturing D) pornography Central Chemoreceptors: Sensory receptors located in the central nervous system that primarily detect changes in the acidity (pH) of cerebrospinal fluid. Medulla Oblongata: The lower portion of the brainstem, controlling vital bodily functions such as breathing, heart rate, and blood pressure. Carbon Dioxide: A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis. Hydrogen Ions: Positively charged ions (H+) formed when hydrogen atoms lose their electrons, significantly influencing the pH of solutions.