This rock may be formed from magma that hardens.

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

How did world war i contribute to the events leading up to world war ii? (a)germans wanted to expand their nation to regain territory in the soviet union. (b)britain and france wanted to force germany to make reparation payments. (c)germans hated the versailles treaty and supported hitler's actions to defy it. (d)the soviet union wanted to take over german territory in eastern europe.

Ball is tossed up in the air at its peak, it stops before beginning to fall. the ball at its peak has