Scientists all agree we need sleep, but there is no consensus
on why true or false?

true

Explanation: Sleep is important to a number of brain functions, including how nerve cells (neurons) communicate with each other. In fact, your brain and body stay remarkably active while you sleep. Recent findings suggest that sleep plays a housekeeping role that removes toxins in your brain that build up while you are awake

hope this helps

plz mark brainliest