Walmart assistant managers average $45,000 a year, which is right on target for the national average salary, according to Glassdoor salary data. If you factor in bonuses and additional compensation, the average pay increases to $48, 311 a year.
Natural selection can only work on existing variation within a population. Such variations arise by mutation, a change in some part of the genetic code for a trait. Mutations arise by chance and without foresight for the potential advantage or disadvantage of the mutation.
Difference between Natural Selection and Adaptation: 1  Natural selection is the only mechanism known to cause adaptation among individuals in a population. 2  The driven force of evolution is Natural selection, not adaptations. 3  Natural selection leads to produce adaptation among individuals in a population during the process of evolution.