When people don't try and help, that is probably a big factor as why depression could be a cause of suicide.
it may not be the "cause" but it could be a "contributing" factor
Any factor that in nature prevents interbreeding between individuals of the same species or of closely related species, for example geographic separation is itself a reproductive isolation because is a factor that prevents interbreeding. -extinction of one species -production of infertile offspring -development of physical differences
A lack of genetic variability in the species :)
The differences in air pressure.
A lack of genetic variability in the species #2
factor trees and prime factor trees are the same thing with different names.
It is the cause of the differences in temperature at the equator and North and South Poles.
The cause of Autism is still unknown. However, there is a strong belief that there is a genetic predisposition when a family member is autistic. Beyond that factor, the cause of autism is a topic of great debate and vast differences of opinion.
Ideological differences did not cause the cold war. Nuclear Weapons caused the cold war.
differences cause problems because most things work when there is chemistry; the definition of chemistry? - without difference.
There's no practical difference, it's just how you arrange the numbers.