Evolution is described as a gradual change. That is what many scientists
believe about the earth, it evolved over many years to the earth we know today. All
things were just formed through this very complicated ever changing process. The
word evolution also refers to the formation and development of life on the earth.
The belief that says all living thing were formed from nonliving matter and changed
throughout the years. This theory says that the first single celled organisms just
showed up about 3or 4 billion years ago. As time passed more complicated
organisms started to appear with had characteristics to help them adapt to their
environments. Throughout the ages all of the species that we know of today where
produced.
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