The secularists say that there was slime, then higher life forms, then apes, then humans -- and then the humans did "unnatural" things and messed up the planet. Hey, if we're just animals, aren't we just doing what comes naturally?
On the other hand, perhaps we were created by God and we were given dominion over the earth.
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Genesis 1:28 "God blessed them and said to them, "Be fruitful and ... Rule over the fish of the sea and the birds of the air and over every living creature ... "