Answer:
According to the Bible and many religions, God created people and all living things, and the planet Earth. Many ancient societies have stories, usually based on nature or powerful beings, to explain how people came to populate the earth. Some other people think that living things started out from one celled forms of life and evolved over millions of years.
It's all about what you believe started it out. Nobody knows for sure how life on earth started, because no human was there at the time. Some of us believe that God created the universe and everything in it including evolution. Has there ever been a society that never questioned this and has no need for an explanation?