Answer :

Desirable change:
The changes which are desired(need) to be change are called as desirable changes.
Ex: Change of milk to curd, reopening of fruits…etc
Undesirable change:
The changes which are not desired to change is called undesirable changes.
Ex: Earthquakes, hurrcanes, tsuanmi ...etc

Answer:

What is Desirable change and Undesirable change

DESIRABLE CHANGE

The changes that we want

and are beneficial to us are

known as desirable changes.

UNDESIRABLE CHANGE

The changes that we don’t want and are

not beneficial to us are known as

undesirable changes.

I hope it helped