As the number of gas molecules in a rigid container at constant temperature is increased, the pressure on the walls
of the container
increases
O decreases
O remains the same

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.