Originally Posted by MJ1970
What are "scientific causes?" Do you mean natural
I don't think anyone is disputing that a) mutations can and do happen, b) can and do happen as a result of natural phenomena (e.g., radiation as you suggested), or even c) that changes occur over time. These are not the things that are generally in question or dispute.
Good. Now we're getting somewhere. We can begin your education as to why evolution is science because of the above. Let's start by answering your questions:
But Evolution appears to mean, to many, not just that concept, but that:
a) these changes accumulate over time to form "beneficial features" in some species, and,
Yes, some mutations are beneficial. Some are harmful, and some are benign. Mutations can accumulate over time. Fact. Next question:
b) these "beneficial features" are then the basis of the continual survival of those species, and,
For those species that survive. I wouldn't say "are then the basis", however. I would say, "are sometimes the basis". Fact.
c) these changes go in different directions over time, creating new species that are different and separate from (i.e., don't interbreed with the previous species, but now interbreed among themselves to grow the population of this new species by producing re-producable offspring), and finally,
This has been observed, yes. Galapagos.
d) this entire process explains the vast diversity of plants and animals that now exist (and ever have existed) in the history of the planet.
Well, I would state it that, "this entire process can
explain the vast diversity...
You see, you're saying that you agree that natural mutation happens. You agree that it can accumulate over time. But you disagree with an assertion that hasn't even been made. That it is the only
thing that causes change in species. No one has said that.
However, what we do know is that natural evolution is the only thing that has been proven
that can cause change in species. So it is the only explanation that can be taught as science.
This is why I asked you (or others) to define as precisely and clearly as possible what it means to you when you hear the word "evolution" (in the context of biological sciences.)
Finally, you still haven't told me whether this idea is falsifiable or not and, if it is, how so.
I have. We don't have to know that all changes in species and speciation are a result of natural evolution for it to be science. Just that some
of those changes are. And that we do know.
And to this I must add. Just because evolution is proven science doesn't mean there is no God or that Creationism is false. This is a logical fallacy that the less intelligent religious folk too often make, leading to their entire dismissal of evolutionary science. Why can't they accept evolution as ONE way species change, and continue to believe in God as ANOTHER way? Maybe aliens are a third way. If we ever have any viable evidence of one of those, they can be taught in the (non-religious) classroom with equal weight.