Google definition: a statement of the exact meaning of a word, especially in a dictionary.
the degree of distinctness in outline of an object, image, or sound, especially of an image in a photograph or on a screen.
My definition: The meaning or deintion of any word.
Explanation:
in my opinion I'd say it's gravity because it's making the book stay in it's one and only position pulling the book at the center of the desk
Answer:
(D) parasite........................
Look at it this way:
Every time the plane flies through 400 miles of air,
the air moves it 40 miles backwards.
So it only covers 360 miles of ground in an hour.