Two reactant particles collide with proper orientation. The collision will be effective if the particles have (A) sufficient potential energy
(B) high activation energy
(C) high ionization energy
(D) sufficient kinetic energy

And explain why, and answer in

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

i'm pretty sure its b i might be wrong though!