The image below shows how warm and cool air moves over Earth
What is this type of air movement called?
A. convection current
B. atmospheric current
C. horizontal air current
D. prevailing surface winds

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.