The answer is option 4 :3
These are called mutations. although mutations can often be changed especially in diseases.
I'm not quite sure what you mean by which sphere, but I found that the most abundant gas on earth is nitrogen at 78%. Hope this helps
The 16th president of the United States was Abraham Lincoln. He was assasinated at Ford's Theatre on April 15, 1865. He was assasinated by John Wilkes Booth.