EvoTards love to rewrite history. Case in point "natural selection". There were published articles in the early 19th century that discussed the exact concept that Darwin called "natural selection" (On the Origins of Species by Means of Natural Selection"). Darwin may have coined the term but he did not "invent" the concept.
And even in Darwin's day there was an uneasiness about the term because they knew that nature does not select. Darwin was trying to compare this concept to artificial selection/ animal husbandry, so "natural selection", although wrong and misleading, was what he came up with. And that is also why the term "survival of the fittest" was coined, as a replacement.
But anyway, what is it- what is this concept, what does it consist of?
“Natural selection is the result of differences in survival and reproduction among individuals of a population that vary in one or more heritable traits.” Page 11 “Biology: Concepts and Applications” Starr fifth edition
Differential reproduction means that some will out-reproduce others. For natural selection that differential reproduction has to be due to heritable variation. So it really isn't as simple as saying some will out-reproduce others, therefor natural selection.
What does Kevin McCarthy say:
In the simplest terms, natural selection says that organisms that are more for fit for their environment tend to preferentially survive and pass their traits to their offspring.
Does Kevin understand that fitness is linked to reproductive success? Obviously not. Such is the life of an ignorant science teacher.
Then Kevin asks:
But how can simple changes in the gene pool, which are usually changes in the percentage of each allele, result in the massive diversity around us?
No one knows, Kevin. Not even you. And that is because no one has demonstrated changes in genomes can account for the diversity we observe. There isn't anything in genetics that supports the claim.
Genes influence traits. Blue eyes are a trait. Being human is not a trait that can be linked to any genome.
So here we have a science teacher spewing unscientific garbage and feeding it to his students.
Now I understand the problem with Texas and education.