There is 4000 balls in the earth of the world why is that so hard for you
This is true. The break handles and brakes are levers and the seat adjustment (raise or lower) is a screw.
'N' is labelled 'runoff'. That's when the water is down. Streets are wet, worms come out of the ground, and water flows down the street to the sewer.
Scattering occurs when light changes direction after colliding with particles of matter.
