Most physical and psychological traits are

Polygenic traits

Polygenic traits are those phenotype which is determined by more than one gene. These traits are represented by a consecutive arrangement, such as skin color and height which are polygenic. The legacy of polygenic attributes does not reveal the phenotypic rates representative of Mendelian heritage, though each of the genes participating to the attribute is obtained as represented by Gregor Mendel. Many polygenic traits are also determined by the conditions and are called multifactorial.

not  

cuba  

russia  

iraq  

el salvador  

explanation:

known as the land of volcanoes, el salvador has visit seismic tremors and volcanic movement. it is the main nation in central america that does not have a coastline on the caribbean sea. about portion of all salvadorans live in the wide open. they are poor and don't have power or running water in their homes. in 1525, pedro de alvarado, a lieutenant of cortés's, vanquished el salvador. el salvador, with alternate nations of central america, pronounced its freedom from spain on sept. 15, 1821, and was a piece of a league of central american states until the point when that association broke up in 1838.