In the diagram, the change in the length of the neck of the giraffes shown was brought about by

Kajosam

4 years ago

should be use and disuse not natural selection

Hsgsvjkkny

5 years ago

There is nothing like such a statement in the rest under organic evolution

omgimd

1 year ago

The primary driving force behind the giraffe's long neck is natural selection.
Individuals with slightly longer necks had an advantage in accessing food resources (leaves on tall trees) that were unavailable to shorter-necked giraffes.
This advantage allowed them to survive and reproduce more successfully, passing on their longer-neck genes to their offspring.