Most people do not need to learn ICD, so the question needs to be more specific.
No
All humans have the personality trait that could display as greed; it would be related to our innate drive to survive. Most people overcome the natural tendency by thinking of the other person/people because most of us learn early the value of others in our lives and sharing. You will notice that humans up to a certain age are naturally greedy and sometime around their second or third year are usually taught the value of sharing.
He started learning calculus when he was around twelve years old and had mastered it by the age of 15.
it depends on the mental ability of the child. Most people have to repeat something 20 times at least in order to remember it. Some people need a few more repititions.
whenever. it doesn't matter. some people learn at a young age, but people can learn at any age.
I'm sure she can. Most people in America learn to read at a young age.
kids learn from the 6 to 12
seventeen!
age when most people were nomads
Most kids learn to read around kindergarten age, though kids whose parents help them can learn earlier.
they didn't. learn things.
grow food
the old stone age
they didn't. learn things.
People don't get dumber. As people get older, they learn more and thus get smarter.
The age at which the most people have anorexia is between 12 and 25.