Adaptation. An adaptation is a feature that is common in a population because it provides some improved function. Adaptations are well fitted to their function and are produced by natural selection. vestigial structure is a feature that was an adaptation for the organism's ancestor, but that evolved to be non-functional because the organism's environment changed. Fish species that live in completely dark caves have vestigial, non-functional eyes.
1 A nurse administering Botox in a mall on average costs $9-$12 per unit, or $200-$300 per area (with 20-30 units), which can run $200-$600 for a typical treatment. Treatments may be every 3 months. 2  A nurse administering Botox in a mall on average costs $9-$12 per unit, or $200-$300 per area (with 20-30 units), which can run $200-$600 for a typical treatment.
Now to calculate how much Botox will cost you, first select the area of concern. Take the number of units and multiple by the cost per unit to determine your cost. For example if Botox was $8.75 per unit and the area of concern will take 10 units to correct then 10 per unit X $8.75 = $87.75 cost for the area to be treated. Most providers charge between $10-16 per unit of Botox with the average being $13 per unit. We hope this helps consumers like you to determine the cost of Botox for you, so you can budget appropriately prior to seeing your provider.