1 If you're under 16, it can helpful to bring along a parent or guardian for the initial interview with the people seeking babysitting. 2  This reassures the other parents that your own parents are invested in your success and that you mean business, and it also protects you.
Evolutionary biology. Fitness (often denoted w {\displaystyle w} or Ï in population genetics models) is the quantitative representation of natural and sexual selection within evolutionary biology. It can be defined either with respect to a genotype or to a phenotype in a given environment.
Evolution means the changes that occur in a population over time. In this definition, a âpopulationâ means a group of the same species that share a specific location and habitat. Evolutionary changes always occur on the genetic level.In other words, evolution is a process that results in changes that are passed on or inherited from generation to generation.omo erectus was a very successful species of the middle period; fossils have been found throughout Africa, Europe, and much of Asia, and the species may have survived for more than 1.5 million years. The final transition, from the middle to late periods, happened about 200,000 years ago.