How long should you hold stretches? 5 seconds 45 seconds 1 minute 15 seconds

Aperson who doesn't have enough calcium in his or her diet is at risk for developing bones that are weak and break easily. this condition is known as  a.  osteoporosis.    b.  crohn's disease.    c.  celiac disease.    d.  hemophilia.

True or false a fertilized cell divides many times to form an embryo

According to bowlby which of the following is not required in order for infants to form healthy attachments with their parents