Theory Of Evolution example essay topic

People are always arguing over which theory is true, evolution or creationism. The theory of evolution has a lot to do with natural selection. Natural selection is when the individual with the best traits survives, and passes on their good traits to their offspring. Those offspring create more individuals with those strong traits, and eventually all of the species will have those strong traits. This means that if this cycle is carried on long enough, it will result in changes in a population, eventually resulting in a new species. Darwin thinks all life forms have descended from a common species in ancient times.

Creationism believes that all creatures and life forms were created in their current state. Creationism believes that God created the earth and everything on it, the animals, the mountains, the oceans, the plants, and the people. It says that God created the creatures to "fulfill their place in existence". In other words, God created creatures to only do the job needed. He didn't create creatures for no reason; every creature has a meaning on the earth. Also, God changes animals according to what they need over time.

So, if a creature needed to swim to survive better, God just changed that creature so it could swim. Creationism follows exactly what the bible says. I personally support the theory of evolution. "In the struggle for survival, the fittest win out at the expense of their rivals because they succeed in adapting themselves best to their environment" (Charles Darwin, web quotes. html).

Charles Darwin is the man who developed the theory of evolution. He observed animals from various places and watched species evolve before his eyes. When he put out his theory on evolution, scientist thought he was crazy, but soon enough he got some followers and now his theory of evolution is, scientifically, the most stable. That quote, by Darwin himself, is explaining natural selection. Natural Selection is one of the main ideas to evolution. Adaptation is the other main idea in the theory of evolution.

Natural selection occurs when there is more offspring than can survive, and only the strong survive. Those strong individuals pass on their strong alleles to their offspring. Soon enough this will lead to the gradual evolution of the population. The creatures will change to better survive in their particular environment. Adaptation is when a species changes because of the environment around it. With the theory of evolution we believe that the earth is about 4.5 million years old.

Creationism states that the earth is only about 6,000 years old. Scientists have proven that the earth is much older than 6,000 years old. They did this by taking pieces of rock and earth and using a machine with special crystals to determine the age of the earth. Scientists have fossils that show gradual change in species over the years. Creationism says that all the species came to the earth as they are now, but there is evidence proving the species evolved into what they are today. Scientists observe the gradual change in species, such as an ape-like creature into a human, or a four legged land mammal into a whale.

They have almost positive proof that all animals descended from a common ancestor, which means everything started out from the same little cell that was created at the beginning of time. They look at animals, such as whales, and see they have parts that they don't need. Whales have a pelvis, but why would whales need a pelvis? They don't, the pelvis is there because they evolved from a land mammal that used to walk on four legs. Eventually the pelvis will disappear because the pelvis is useless to the whales. These parts that are unnecessary to the animal are called vestigial structures.

Vestigial structures are like just extra parts; obviously something wouldn't have extra parts if it hadn't evolved from something else. If creationism were to be true then why would a whale have a pelvis? Why would God give an animal an extra part that isn't necessary? Looking at the facts, evolution is clearly the better theory. There is much more scientific fact and evidence backing up the theory of evolution then there is backing up creationism. That is why I personally support the theory of evolution.