I have listed below TWO video links underneath the questions that need to be wat

I have listed below TWO video links underneath the questions that need to be watched along with some readings.. Also, I attached more readings that need to be read. The 5 questions below need to come STRAIGHT from the readings and videos I have provided!
1. Which of the stats in the video was most surprising to you and why? Look up the current info for that stat and report it in your answer. WITH a resource. Web link is fine.
2. What would a bottom-heavy population pyramid tell you about the future of a particular country?
3.What problems can high population densities create in nature?
4.Why are human survivorship curves a Type I?
5. What’s a cohort?

https://www.nature.com/scitable/knowledge/library/introduction-to-population-demographics-83032908/
https://www.nature.com/scitable/knowledge/library/survivorship-curves-16349555/