In plain fact, no scientist can explain how these evolutionary leaps occured. And then there is the enigma of how complex life arose spontaneously from carbon chains in the seas. If they stuck to just the well established facts, evolutionists would have to admit they have no adequate theory to explain either life's origins or the flowering of so many species.
Of course they can.
You just don't like the explanations, because they don't fit your religious ideas.
Evolution facts include the confirmed observations of A) descent with modifications and B) natural selection.
Evolution theory is many-times confirmed in the fossil record, in DNA analyses and inputs from virtually every other branch of science.
And there is no other scientific theory to compete with Evolution.
Indeed, there is not even a serious alternate scientific hypothesis out there.
Yes, the origin of life on earth is the subject of several scientific hypotheses, most of them various possible types of abiogenesis.
Another two potential hypotheses have been mentioned, though neither is testable scientifically: panspermia (life arrived on meteors from outer space) and intelligent design (which is unspecified in scientific terms).
ARepublicanForAllReasons: "If they stuck to just the well established facts, evolutionists would have to admit they have no adequate theory to explain either life's origins or the flowering of so many species."
Evolution theory does not explain life's origins.
Evolution theory begins once life has started.
Several hypotheses for abiogenesis have been proposed, though none has yet been confirmed.
The "flowering of so many species" is a simple extension over time of basic evoloutionary processes: A) descent with modifications and B) natural selection.