In school buses all sorts of things are left by children.
The punctuation should be a colon, if not then a coma but colon is definitely it.
Answer:
Africa
Explanation:
Africa is the continent having GDPs below $100 billion because there are more under developed country in africa than the developed.
Answer:
People who study codes
Explanation:
The sentence that gave it away is If there were no cribs to be found, the British would send out false information about, say, British mines planted in a given area. The Germans might then send messages with the name of that area, which would provide clues about deciphering that code.
Hope this helps
