This is an example of; evolution
Evolution is a gradual process in which the characteristics of a species are changed in response to its environment over several generations. Evolution depends on the process of natural selection. Some of the changed characteristics (traits) may be beneficial to the organism and it can be transferred to their offspring.
Complex organisms need cells that can perform many different functions. they need to be supported on a cellular level. Without specialized cells you they won't be able to perform different functions.
ASK SOCRACTIC IT WOULD REALLY HELP
Reaching out for help and support is an important first step in dealing with the issues drugs and alcohol might be causing in your life, or affecting a friend or family member.
Here you will find a number of different resources to help you, or help you support someone you care about.
Evaluation phase is the answer to the question