Why is the high abundance of a species an indicator of biological progress?

1) A large number contributes to the expansion of the range,
2) increases the likelihood of meeting individuals and their free crossing,
3) the diversity of individuals increases due to the large recombination of genes; the gene pool of the species is enriched.

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.