There are 5 ways we can observe evolution.
- Personally, I got to study evolution going on inside my own body. Every few years, my HIV (Human Immuno-deficiency Virus) viruses would evolve immunity to my drugs. Now I take a 4-drug cocktail. It harder for my bugs to evolve immunity to all the drugs simultaneously.
- You can study fossils. If you find enough you can see how creatures very gradually morphed. It takes about 200,000 years usually to notice much difference. Creationist Ken Ham has the strange idea you must be present while an animal is still alive to learn anything about it Were you there?. Ken is unaware of what modern forensics can discover by studying murder victims long after they are dead.
- You can study the evolution of single-celled organisms in the lab or from fruit-fly experiments.
- You can study evolution in the wild. For example, a team watched a new species of fish split off in a Mexican river. Anoles evolve within a decade to be optimally shaped for the local vegetation. You can study ring species such as Ensatina and various birds.
- You can study the DNA (Deoxyribonucleic Acid) and how new variants can form from tiny errors.
I suggest you read Dr. Daniel J. Fairbanks’ Evolving: The Human Effect and Why It Matters. Creationists have not learned anything new about evolution in 157 years. They make idiots of themselves arguing from such profound ignorance.~ Roedy (1948-02-04 age:69)