Baby Nathalie is trying a new food. Her facial expression shows a distinct, archlike mouth opening. Based on her reaction, Nathalie probably finds that the food tastes

Shannon blinks as she steps off the school bus and walks into a gust of wind. This automatic reaction is regulated by the ________

a. spinal cord. b. lower part of her brain. c. hormonal activity in her body. d. hippocampus.

The fetal stage occurs between

A) conception and 2 weeks. B) 3 weeks and 8 weeks. C) 9 weeks and birth. D) the onset of labor and delivery.