Isn't it past your bedtime?

Which of the following is an important function of child-directed speech? (a) it captures the infant’s attention and maintains communication. (b) it reduces the occurrence of infantile amnesia for the earliest memories of infancy. (c) it reduces the need for reciprocal interaction between caregivers and children. (d) it assists in prolonging rem sleep in infants.

Rotation of the head is made in atlanto-occipital joint or not?

per vehicle mile, motorcyclists are times more likely to die in a crash than passenger car occupants.