Apartment Reviews at The Commons at Penn Avenue. By clicking submit, I agree to the Apartments.com Terms of Service and the Ratings & Reviews Terms of Use. There are no reviews for this property. Be the first to add a review on this property.
The early child period is considered to be the most important developmental phase throughout the lifespan.
The three stages of prenatal development occur in the order of germinal stage, embryonic stage and fetal stage, according to About.com. The germinal stage lasts just two weeks. The embryonic stage lasts six weeks, and the fetal stage is the longest, occurring from the ninth week of pregnancy until the baby is born. Continue Reading.