Microtubules are long,hollow protein cylinder that form a rigid skeleton for the cell golgi apparatus
~Jurgen
A mathematical model of a food web helps you better understand portions, and track the structure of how the web is flowing. The food web could also help because it helps predict things.
The answer is ‘behavioral isolation’. It is a form of
sympatric speciation - which occurs even when
species live in the same habitat. In this case,
the individuals in the population are isolated by differences in mating and probably different mating rituals.
In eukaryotic cells DNA is in a nucleus where are in prokaryotic cells DNA is free