I can travel at nearly 100 miles per hour, but never leave the room. You can cover me up, but that doesn't slow me down. You will not know if I come only once or again and again and again. What am I? ILL GIVE BRAINLIEST FOR BEST ANSWER WORTH 100 POINTS

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. drag each phase of mitosis to the correct description.