Classifying Growth and Developmental Changes - JSS2 Basic science Past Questions and Answers - page 1

Temporary changes are short-lived and reversible, such as temporary increases in height during adolescence. In contrast, permanent changes are lasting and usually irreversible, like the growth of adult teeth to replace baby teeth.

An example of a temporary change would be the temporary increases in height that occur during adolescence.

Permanent changes are lasting and typically irreversible. They include developments like the growth of adult teeth to replace baby teeth or the development of secondary sexual characteristics during puberty.