What method did painters use to achieve a realistic style?

It looks like you posted this twice, so here is my answer from your other post:

Artists used and use linear perspective to create a realistic style. Linear perspective is when an artist bases shapes, figures, etc on their relation to the horizon. The ultimate effect of this is that it allows an artist to create depth (3D feeling) on a 2D piece of paper

war never

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation: