Apharmaceutical company conducts an experiment in which a subject takes 100 mg of a substance orally. the researchers measure how many hours it takes for one quarter of the substance to exit the bloodstream. what kind of variable is the company studying?

1infants internalize what they take in through their senses and                a.  show no signs of remembering it.      b.  vocalize it.      c.  display it in physical movements.      d.  forget it immediately.2 early experiences have a impact on the architecture of the brain.                a.  decisive      b.  mild      c.  minimal      d.  moderate  3which of the following is an infant's main learning tool in the first months after birth?                 a.  mouth      b.  music      c.  book exposure      d.  hands

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How could a person communicate directly with leaders about community health issues