Which of the following organisms can cause pneumonia, blood poisoning, meningitis, and ear infections?

Primary aging refers to age-related changes that

inevitably take place as time goes by. occur prior to middle adulthood. take place as a consequence of a person's unhealthy behaviors. are entirely genetic in origin.

Research on Piaget's cognitive-developmental theory indicates that

A) he overestimated the competencies of infants and young children. B) children generally reach their full intellectual potential, regardless of education and experience. C) children's performance on Piagetian problems can be improved with training. D) his stagewise account overemphasizes social and cultural influences on development.