True or false? Since the human body is continually making more blood, it is safe for healthy adults to donate blood?

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.

Scientists who study the anatomy of the systems in the human body focus their studies on

True or false? the usa has one of the safest food supplies in the world