Fossils have been found that show slight changes in species over time that lead up to an animal in the present. A good example of this is the current day whale.
The picture above shows how whales may have come from Pakicetus from around 49 million years ago. Over time they have evolved to become better suited in the water, with adaptations allowing for hearing underwater and easier and faster swimming. But fossils are hard to find, and although they have similarities suggesting evolution, they don’t prove that one species came from another. However, another piece of evidence for common ancestry is genetics.
The multiple similarities between human’s genes and other animal’s, especially a chimpanzee’s, if a commonly known fact. But could this mean that we may have a common ancestor, or may even come from them? Studies suggest that yes, we may have the same family tree, and have evolved from apes. DNA is an essential part that makes up who we are, and even the smallest bit changed can create big differences. But with a bunch of small changes happening over time, eventually the end result will be much different from the starting product.
Why am I here? 