Answer:
Persia's standing army was an important factor in Persia's rapid growth because of the elite soldiers within the standing army. They were known as the "Immortals" and tasked to maintain order from within and the outside.
Explanation:
Answer:
Breast development has not occurred by age 13
Explanation:
Delayed puberty is a condition under which secondary sexual development which includes breasts in girls, underarm hair and sexual desire in both sexes, etc are delayed. The reason can be varied from family history to medical conditions (for example asthma, kidney diseases, diabetes, etc). One of the treatment of delayed puberty is hormone therapy.
Acceleration is inversely proportional to the mass of an object
Its found near underwater mountain chains also known as mid-ocean ridges