Catalysts
a catalyst is something added to a reaction that speeds it up (or lowers the activation energy)
increasing the temp would speed up the whole reaction but not lower the activation energy
so B.
Answer:
a. Cylinder head
b. Exhaust valve
c. Engine block
d. Stroke
e. Piston
f. Intake valve
g. Cylinder
h. Combustion chamber
i. Crankshaft
j. Spark plug
Explanation:
If you don’t believe me, look up a diagram of an internal combustion engine.
Answer:
Wait, that can happen? I'm sorry.
Explanation: