Mike lives in a cold mid-western city, where there is not much predator prey interaction. Mike noticed that in his city some squirrels have darker coat, while others have lighter coat. He also knew that darker coats are more suitable in cold environment with less predator prey interaction. He started thinking why the squirrels developed different coat colors. Would darker coat become less or more common than lighter coat?
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Answer: more

Nigeria invested in sand mining and started mining coastal barriers. Congo continued preserving their picturesque beaches. Which country destroyed more of their beaches?
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Answer: Nigeria

Two friends had unprotected sex with their respective dates on the same night. Everything went fine for both of them. They later found out the bad news. Mike had been infected with HIV. Luckily enough Pete was healthy, he didn't get any diseases. Which friend had a virus that is transmitted by contact with infected breast milk?
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Answer:
Mike