birth rate - the number of births in a population in a certain amount of time, death rate - the number of deaths in a population in a certain amount of time, immigration - moving into a population, emigration - moving out of a populatoin, population density - number of individuals per unit area,

લીડરબોર્ડ

દૃશ્યમાન શૈલી

વિકલ્પો

ટેમ્પલેટ બદલો

આપોઆપ સંગ્રહ થયેલ છે: ?