What is the role of the driving forces of evolution in shaping the fitness of organisms?

1) Due to hereditary variation and sexual reproduction, the population becomes heterogeneous.
2) In it there is a struggle for existence, which leads to natural selection.
3) Natural selection, among many generations, preserves the signs useful in the given conditions, so adaptations to the environment are formed.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.