Evolution Isn T Just A Scientific Theory

Essay

Many people with many religion and cultures pass of the theory of evolution as ‘just a theory’ but people don’t understand what is a scientific theory actually means. A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. These theories are fact supposed not guesses with hard evidence which have been proven time and time over again. This essay will show some of the evidence that can prove that evolution isn’t just a theory. These three paragraphs will be about own common ancestor and the common traits they share, how we can see species change over time in different species and The Remnants of Past Generations

The patterning of the similarities speaks volumes. In evolution, these “similarities” which are passed on are known as “synapomorphies.” These are characteristics that are present in ancestral species and have been passed down exclusively (in more or less modified form) by this species evolutionary descendants adapting each time. Evolving and improving to fit the environment creating the sense of survival of the fittest. Synapomorphies come in nested hierarchies that are related to the variety and intensity of the similarities. The similarities have been inherited from common ancestors, and the further back in time any two species shared a common ancestor, the more faded and distant the similarities become. It is important to note that, species with a large number of similarities tend to live near each other—penguin species only live in the Southern Hemisphere, marsupials live almost exclusively in Australia, cacti almost exclusively in the Americas, lemurs in Madagascar, etc. If evolution was not true, this geographic patterning would make absolutely no sense. Furthermore, these similarities often seem to be completely arbitrary, rather than having some selective

Early paleontologists, like Charles Lyell and George Cuvier, noticed a very simple fact: Species that lived in the past are very often drastically, wildly different from anything alive today. Trilobites, dinosaurs, giant sloths, baculites, etc., they all suggest that life on Earth has changed and ‘evolve’ quite a lot.

That is interesting enough on its own but there is more. What makes it more interesting is that the further back you go, the more different the species appear when compared to today’s species. These overarching trends can also be seen on the individual level, as lineages can be seen changing over time.

How do we know, though, that fossil progressions don’t just represent separate, unrelated species? First, they have similarities that suggest they are related eg homologous structure and Analogous structures. Secondly, they represent a trend, also known as a progression of change. For instance, over time, the species go from low expression of a certain trait to intermediate expression to high expression. Like the evolution of legs, for example. Where is the missing link is evolution, you wouldn’t be able to find it because ether is no missing