Title: Detroit.
Question: What fraction of Michigan's homicides occurred in Detroit?

Title: Alexander Graham Bell.
Question: Bell's patent was for the method and what for transmitting vocal and other sounds telegraphically?

Title: Race (human categorization).
Question: What doesn't the genetic variation within the human species support?

Title: Wood.
Question:
If a tree starts forming heartwood right away, will its sapwood layer be thin or thick?