When new evidence or a new way of thinking is brought up in regards to a specific matter, if said person isn’t willing to change their ways of thinking or it becomes very personal to them, they will have a difficult time changing with the times. This could possibly hold back new discoveries and halt new findings in the scientific community.
The United States is the world's biggest oil consumer, followed by China, Japan and India.
The events that lead to genetic drift are Natural disasters, and reduce of population