1 Click here for USDA Hardiness Zone map. 2  Apple trees start to bear fruit from when they are 4 or 5 years old until they are over 50 years old. 3  The tree itself can live for over 80 years. 4  Apple trees need a certain number of months of freezing or near freezing temperatures in order to set fruit. USDA Hardiness Zones 3 to 8. 2  Click here for USDA Hardiness Zone map. 3  Apple trees start to bear fruit from when they are 4 or 5 years old until they are over 50 years old. 4  The tree itself can live for over 80 years.
A 2-year-old, it turns out, knows the difference between right and wrong. According to psychologist Judi Smetana, the sense of morality begins to develop early in humans. And by the time children are 3 to 4 years old, they recognize certain behaviors â such as hitting â as wrong, even when no one is watching, says Smetana, a professor at the University of Rochester.
1 A child does not understand until about the age of six that he or she will always be a boy or a girl. 2  Before that children think their sex can be changed. 3  It is usual for preschool boys and girls to dress up in clothes of the other sex as a way of trying out what it is like to be a man or a woman, a father or a mother.ross dressing that most children do. 1  Children know by the time they are about three whether they are boys or girls. 2  They can say I am a boy or I am a girl. 3  A child does not understand until about the age of six that he or she will always be a boy or a girl. 4  Before that children think their sex can be changed.