The critical period is a time where a child has the best ability to learn and I believe that it is around age 3-6. During this period children learn much more quickly and retain info better.
-12
Its always good to learn the guitar, if you can start at the age of 8 - 12 If you love that instrument, age do not matter.
300
As with almost any learning, the earlier you start the better.
You begin to learn science as a baby, as you observe the world around you and learn how things work. Every age is the right age!
Age spots come with age. The best way to have younger looking skin without the age spots would be to go to agespots.net. These dermatologists can instruct you on the best books to buy for your mother to help her to learn what they are and how to diminish or remove them.
I think its easier to learn a language when you are between 5 and 10. That time your vocal cord are not fully grown so it will be easier to pronounce sounds and other kind of stuff. If you want to learn sing language then you ca learn it almost at any age if you have really good memory if you are a elder.
whenever. it doesn't matter. some people learn at a young age, but people can learn at any age.
age 5
age 6
There is no definite age, it depends on how much you work with the bird and the birds ability to learn. Some may never learn.
Usually around 12 to 15 is the age to learn about sex if you are mature enough.