There are both enviromental and food stimuli that can disrupt sleep true or false

i need with 1.3.2 investigate cycling o2 and co2 apex

we need to see it

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.