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Modules 45-46

Across
the developing human organism from about 2 weeks after fertilization through the second month
agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm
a branch of psychology that studies physical, cognitive, and social change throughout the life span
Down
biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience
decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a visual stimulus, their interest wanes and they look away sooner.
the fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo
the developing human organism from 9 weeks after conception to birth