Which of the following phases has a variable volume?
a.) solid
b.) liquid
c.) gas
d.) all of the above

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Write a polynomial function with the given zeros x= -1,0,2show your work