Answer:
Explanation: Any change in the population, for example in terms of average age, dependency ratios, life expectancy, family structures, birth rates etc.
Answer:
relationship between blood flow and the heart rhythm and helped them discover how the heart works
Explanation:
its in the question
Ghettos are often know as being more impoverished/poor than other areas of the city. Ghetto is also more than likely toward darker races/black. This term was also used towards African Americans during that time.
Freedom, Nazi Germany is defeated.
