add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation. if people…

add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation. if people are deprived of rem sleep their bodies will adjust by reducing the time spent in other sleep stages—a phenomenon called \rem rebound.\

add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation. if people are deprived of rem sleep their bodies will adjust by reducing the time spent in other sleep stages—a phenomenon called \rem rebound.\

Answer

Brief Explanations:

The two clauses are independent and closely - related in meaning. A comma is used to separate them in a complex sentence.

Answer:

If people are deprived of REM sleep, their bodies will adjust by reducing the time spent in other sleep stages—a phenomenon called "REM rebound."