Which would increase the reaction rate? O A. Lowering the value of k
B. Removing heat from the system
C. Decreasing the reactant concentrations
O D. Adding a catalyst

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

Why is carbon ideal for making different compounds?

Stage in which a star’s outer layers have started to cool and grow outward?