Latitude is not a factor in marine life divisions.
A: Population
If a group of one certain species are living in the same area they are a population. The same goes for humans, we are the same species and when we live in the same area we say we are part of a population. That’s why you would hear things like “the population of massachusetts is 2million” or whatever it is.
The independent factor is typically the unit on the x axis, while the dependent is on the y axis. An Example would be miles per hour, miles would be graphed on the y axis, and hours on the x axis.
