Title: Indigenous peoples of the Americas.
Question: What is the only way that Y-DNA and mtDNA change?

Title: Neptune.
Question: How much more mass does Neptune have compared to Earth? 

Title: Muammar Gaddafi.
Question: At what prison did extrajudicial executions occur according to HRW?

Title: Federal Aviation Administration.
Question:
Where must devices be put during actual takeoff and landing?