mostly for convenience
No, it is 'generations'.
by technology through the first 3 generations, after that there is some disagreement.
They are now two different species.
Computers are classified by a number of aspects. By purpose/functionality they are classified into special and general purpose. By size they are classified into mainframes, mini computers, desktops and portables. Historically, the more recent generations of computers were smaller in size and more general-purpose than their predecessors.
generations to generations
These populations would be classified as different species. Geographic isolation has led to reproductive isolation, causing them to evolve independently and become unable to produce viable offspring together.
Just simply "generations". Generations is already a plural of the word generation.
6 generations
Ten generations
Ten generations
19.07 generations
Generations By: Sara Groves