Which describes the major thesis contained in Darwin's book. On the Origin of Species by Means of Natural Selection? O Changes to plant and animal species occur because of God's desire to improve on His creations.
O All plants and animals have gradually evolved over time through a process called natural selection.
Plants and animals have gradually changed over time as a result of limited food supplies.
O The origin of most species of plants and animals can be traced back to the Galápagos Islands.​