This question has a two part answer. The first part is that an asteroid hitting the earth and the second part is massive volcanoes erupting around the world.
I would say option A - The reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn.
Explanation:
Firework exploding is a regular chemical reaction chain which ones started does not stop till the chain is complete. The action is rapid and cannot be stopped in the middle as compared to candle burning.
I'm not a hundred percent sure but try asking Google
Answer:
A
Explanation:
because the crops will not grow with herbicide