Which term describes the point when two objects reach the same temperature and there is no longer a transfer of energy through heat?

1. latent heat
2.specific heat
3.thermal equilibrium
4.heat of fusion

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.