According to Erikson, an infant whose parents do not attend reliably to his or her needs is likely to lack the ego strength of

The smallest units of meaning in a language are known as __________

a) morphemes. b) phonemes. c) semantics. d) syntax.

The __________ folds over to form the __________, which will become the spinal cord and brain

A) mesoderm; neuron tract B) ectoderm; neural tube C) endoderm; neural tube D) ectoderm; neuron tract