What is the speed of an object at rest?
0 m/s
O 1 m/s
O 10 m/s

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.

How do cracks affect the rate of weathering?