Niagra Falls due to the erosion of the earth beneath the falls. It moves back about 3 feet each year.
Niagra Falls
the gluteals
ur dum
"Backwards" is an adverb, not a common noun. It is used to describe the direction in which something moves or faces.
A swing!
Wind
no bird can only move backwards! only a hummingbird has the ability to move backwards but it also moves forwards and left to right!
amoeba
The atoms of the particular medium in which the sound is produced moves backward and forwards in sound.
amoeba
because a planet turns left as it moves, when you see both at the beginning, your eyes expect for both to move different, so it looks like its going backwards