Title: PlayStation 3.
Question: Along with a drop in the cost of hardware, PS3 has gotten cheaper to make because what chip was phased out?

Title: Carnival.
Question: The chirigotas, choirs and comparsas are the most famous of what?

Title: Adolescence.
Question: What seperates "heavy" sexual activity from other forms of affection?

Title: Daylight saving time.
Question:
Joining Merriam-Webster's and the Oxford dictionary, the older form of the phrase without the "s" is still listed first in what dictionary?