1. Natural and Artificial Selection: Evolution
... one primitive species or a self replicating molecule that was present more than 3.5 billion years ago and has evolved and branched out over time due to natural selection. With the change of environmental factors natural selection occurs and selective pressure and mutation occurs resulting in different organisms obtaining different physical and behavioral traits, evolution occurs and the beginning of a species arises overtime ... . 4. Natural Selection The environment favors smiles upon certain individuals more than others. Environmental factors select which individual will survive and whi...
- Word Count: 1240
- Approx Pages: 5
- Grade Level: Undergraduate