Some researchers have suggested that our 24-hour sleep/wake cycle may partially be a response to a world where the sun rises and sets on a 24-hour cycle. Imagine that the earth is gradually speeding up, and in 10,000 years the sun rises and sets on a 22-hour cycle instead. If you came to this future world you might expect that people would tend to
A) follow the shortened cycle set by the sun and fall asleep once every 22 hours.
B) follow the old cycle and still fall asleep once every 24 hours.
C) show no consistent wake-sleep cycle.
D) develop an even longer 26-hour sleep/wake cycle.

Question

Quizplus · Accepted Answer

If the Earth's cycle changes to 22 hours, it is likely that humans would adapt to the new environmental cue, the sun's cycle, and align their sleep/wake cycle to the 22-hour day.

Some Researchers Have Suggested That Our 24-Hour Sleep/wake Cycle May