Ch. 3 – From Conception to Birth: What happens to a fertilized egg in the first two weeks after conception? When do body structures and internal organs emerge in prenatal development? When do body systems begin to function well enough to support life?
Ch. 4 – Challenges to Healthy Growth: What is malnutrition? What are its consequences? What is the solution to malnutrition? How do nature and nurture lead some adolescent girls to diet excessively? Why do some children become obese? How can they lose weight permanently? What diseases are life-threatening to children around the world? What accidents are particularly risky for children and adolescents?



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