Yes, evolution through selection procedure better organism in an absolute sense and yes, we are climbing the Scala nature
Step-by-step explanation:
The process of natural selection influences the production of beneficial organism in a population. in this process organism with great evolutionary adaptation are produced. the organism which has better fitness in evolution has a great contribution in a gene pool.
Diversifying, directional, stabilizing, sexual etc are various ways in which the process of natural selection affects the variation and quality of traits in the population.