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.
Frequently Asked Questions About BOTOXÂ® Cosmetic. How much does BOTOXÂ® Cosmetic cost? $12 per unit*. We do have occasional BOTOXÂ® Cosmetic specials and events when you can get it for a reduced price. How long does BOTOXÂ® Cosmetic last? 3-6 months; How soon will I see results after BOTOXÂ® Cosmetic injections?