Answer:
1) made as an age pyramid that shows the youngest age of the object at the bottom and increases as it goes up
2) unusually high fertility or mortality or changes in the population due to immigration or emigration
3) pratically the same as 2
4)a high population of older age groups which signifies a high dependent population.
D seismic waves refract or bend to bounce off differently according to the object or material you have
<span>This project will develop the "Sustainable Project Dashboard", an interactive software application for data collection, analysis and visualization that shows measures of social, economic and environmental performance for sustainability projects. This dashboard would be used as a tool for managing a project, for learning about complex systems and sustainability, and for education and outreach.
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An ethnic group can be classified as a community or population made up of people who share a common cultural background or descent.
The density wave theory suggests that the spiral arms of the Milky Way Galaxy are the result of a Spiral Density Wave moving around the Galaxy.
