What is the ectoderm and why is it important?
What will be an ideal response?
During the embryonic stage, the outer layer of cells of the embryonic disk, or ectoderm, develops into the nervous system, sensory organs, nails, hair, teeth, and outer layer of skin.
You might also like to view...
Outcome studies regarding preschool show that _________ is most important
a. children attending preschool b. the quality of the preschool c. the income of the parents d. how old the child is when they enter preschool
What did researchers find in cross-cultural studies of attachment?
A) Insecure attachment was more common in western cultures. B) European countries value independence, fostering insecure attachment. C) Avoidant children were more common in Israel and Japan. D) Secure attachment is the most common pattern in the eight countries studied.