[Hill of Tara]

like changing from an ape to a human or a reptile to a mammal or a one-celled organism to a human over time.

I dont really think tiny minute changes in DNA structure etc count as "evolution."

Scientists eager to prove evolution probably think differently though.

[CarolinaGuitarman]

"like changing from an ape to a human or a reptile to a mammal or a one-celled organism to a human over time."

Evolution does not require speciation, let alone the class and order jumps you are speaking about.

"I dont really think tiny minute changes in DNA structure etc count as "evolution."

They do.

"Scientists eager to prove evolution probably think differently though."

Along with people with a grasp of evolutionary biology.

[RightWhale]

Scientists eager to prove evolution

It's not a theory and they don't prove it, but they use it to catalog their extensive lists of creatures that would otherwise have no taxonomic organization at all except simple things like feathers-fur-scales-bark.