natural selection

2. : group of organisms that can reproduce with one another in nature and produce fertile offspring
4. Selection : the process through which populations of living organisms adapt and change.
6. : is a defense or tactic that organisms use to disguise their appearance
7. : a change or difference in condition, amount, or level, typically with certain limits.
10. :organisms with the strongest and most desirable characteristics are best able to survive and reproduce.
12. :a carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method

1. :proposed theories like the inheritance of acquired characters, use and disuse, increase in complexity, etc.
3. : to change or develop slowly often into a better, more complex
5. :when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene.
8. of Evolution: based on the idea that all species are related and gradually change over time
9. :the act or process of changing to better suit a situation
11. :receive (money, property, or a title) as an heir at the death of the previous holder.