Depends if they have hit a growth spurt, and what age they are. I'm 13 and i grew about half an inch in 3-4 months.
on average 1 inch
On average, less than 1.
Personally I grew 4 inches in one mint but the average is probably .5 to 1.5
It can grow 12 to 18 inches
On average, human hair grows approximately 1/2 inch per month leading to 6 inches per year.
It is how many inches you grow, there is no exact nunber!
2 inches
7 to 8 inches
2.5 inches
we have a Maltese dog and he is about 10 inches tall
18-22 inches
it is about 15 inches or above,,