Population pyramids past present and future

Population structures are graphical representations of the population of countries. These structures/pyramids change subject to time and the conditions in a country. The following resources help us to understand how they change.The below Ted-Ed Talk compares the Population structures of three countries Rwanda, Canada and Japan and how current population trends can predict future populations. The following sciencemag resource allows you to chose any two countries in the world and shows the changes in population structure from 1970 to 2050. Population structure changesThe last useful resource for showing how population structures are ever-changing is the World Population Pyramid which shows the entire worlds population and how its structure has shifted through time and how it will change into the future.