Answer:
Heat is something you can't control
Explanation:
Plastic is something you could control like moving it around
Answer:
isn't it erosion
Explanation:
if i am wrong sorry have a good day
Answer: Rate of decomposition of acetaldehyde in a solution is 
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
For a reaction : 
![Rate=k[A]^x](https://tex.z-dn.net/?f=Rate%3Dk%5BA%5D%5Ex)
k= rate constant
x = order of the reaction = 2


Thus rate of decomposition of acetaldehyde in a solution is
True, oxygen gas ignites a glowing splint