Other of my comments are already covered, so I'll just add this - the pieces says:

"Only those individuals that are best adapted to their environment are able to survive."

This perpetuates an idea that evolution is all about "Individual" evolution, which is empirically disproven everywhere all the time. Just as laboratory experiments only show us what happens in laboratory experiments, we have long known that there is considerable and often far reaching cooperation among "individuals" in any ecosystem. A forest for example is not a bunch of individual trees but a complex organism made up of countless species with myriad interconnections, and those interconnections directly and indirectly affect the survival of any apparent "individuals."

Likewise with human societies...the inbred "bluebloods" of former European aristocracy were in fact often sickly and weak individuals, and if it were all about individuals they ought to have died out, instead of holding autocratic power over entire countries and kingdoms.

And next comes:

"And they adapt themselves by means of changes in the structure and functioning of their bodies, which occur as a result of genetic mutations."

In part this adaptation may be genetic. However somatic adaptation is also a major factor in overall adaptation. It does not implicate genetic changes, but an organism that survives partly or entirely through somatic adaptation and is able to reproduce has still survived and reproduced. Even if its offspring have no change in genetics, as long as they can also adapt somatically they too can survive and reproduce.

That it's all about individuals and all about genetic changes is a misunderstanding of life's complexity and adaptability.