Bone density increases as we age.
Bone density decreases as we age.
Bones fuse as we age.
Calcification.
4. Why do the number of bones at birth and adulthood differ?
275
206
235
199
3. How many bones does an adult human have?
216
206
300
276
2. How many bones are humans born with?
1. What percentage of the human brain is developed by age five?
95
80
55
75
