At 3 years of age when the outer layer is hardend
In males, the avg age is 25. In females, the avg age is 21.
At 25 years of age
23
arm
Bone starts as cartilage in the fetus. As the fetus takes on the final shape, this cartilage arranges, and enough hardening occurs in the limbs to allow the creature to stand shortly after birth. At that point, all the bones begin to harden, and continues to harden all throughout life. Bones contain a level of cartilage all the way until old age.
Because children have more bones than adults. They is because the bones fuse together when the children are growing. A baby has 300 bones at birth. But because bones fuse together during the "growth period", adults have less bones and they end up with 206 bones.
Bone starts as cartilage in the fetus. As the fetus takes on the final shape, this cartilage arranges, and enough hardening occurs in the limbs to allow the creature to stand shortly after birth. At that point, all the bones begin to harden, and continues to harden all throughout life. Bones contain a level of cartilage all the way until old age.
Children are more flexible in general because compared to developed adults they are still growing and attaining calcium as well as other vitamins that help harden bones and make them inflexible.
22
Bones can harden if you drink calcium.
arm
permineralization
Arthur Harden died on June 17, 1940 at the age of 74.
Bone starts as cartilage in the fetus. As the fetus takes on the final shape, this cartilage arranges, and enough hardening occurs in the limbs to allow the creature to stand shortly after birth. At that point, all the bones begin to harden, and continues to harden all throughout life. Bones contain a level of cartilage all the way until old age.
Tom Childs age 7
ten
yes but sugar has not been invented. they were made of bones of thine childs.
Arthur Harden died on June 17, 1940 at the age of 74.
the limestone harden because theirs another layers of limestone on top of it which pushes the bottom layer and flatten it.
No, she died in 2004 at the age of 91.