How can Newton's law of action-reaction best be applied to explain the movement of a rocket? TEKS 8.6(C)
A As fuel burns, gases push against the rocket, moving it upward
B As fuel burns, gases move out of the rocket and reduce air friction
CAs the fuel burns, the mass of the rocket decreases
D As the fuel burns, the rocket moves faster

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Which type of fossil does this image depict?

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion