Title: Daylight saving time.
Question: In the fall, DST means one hour is repeated, which means the day is actually how many hours long?

Title: Neptune.
Question: Which three planets have small quadrupole moments compared to Neptune?

Title: Antenna (radio).
Question: Where is the radiation patterns in the vertical plane shown?

Title: Circadian rhythm.
Question:
By better using resources, how does that improve an organism's chances of surviving?