Many who do not believe in the Bible embrace the theory that living things emerged from lifeless chemicals through unknown and mindless processes.
Supposedly, at some point a bacteria-like, self-replicating organism arose, gradually branching out into all the species that exist today. This would imply that ultimately the mind-bogglingly complex human actually evolved from bacteria.
The theory of evolution is also embraced by many who claim to accept the Bible as the word of God. They believe that God produced the first burst of life on earth but then simply monitored, and perhaps steered, the process of evolution. That, however, is not what the Bible says.
The Bible account of creation does not conflict with the scientific observation that variations occur within a kind.
King James & Catholic Bibles uses the words (kinds)
Gen 1:11 And he said: Let the earth bring forth the green herb, and such as may seed, and the fruit tree yielding fruit after its kind, which may have seed in itself upon the earth. And it was so done.
Gen 1:12 And the earth brought forth the green herb, and such as yieldeth seed according to its kind, and the tree that beareth fruit, having seed each one according to its kind. And God saw that it was good.
Gen 1:21 And God created the great whales, and every living and moving creature, which the waters brought forth, according to their kinds, and every winged fowl according to its kind. And God saw that it was good.