watch the video

https://www.youtube.com/watch?v=XzoBE8eE81w

and please help me on these questions

1. Where is the most concentration of the recent population growth in the world?
2. What was the total fertility rate in Bangladesh in 1972, and what was the life span?
3. What's the expected total number of children in the world by the end of the century?
4. If we are at the child pick, why the population of the world still growing?
5. What is the expected population of Africa by 2100?
6. What is the share of fossil fuels from overall energy use in the world at this point?