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.
Philosophers and psychologists have long believed that babies are born blank slates, and that it is the role of parents and society to teach babies the difference between right and wrong; good and bad; mean and nice. But a growing number of researchers now believe differently.