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Please, help me.

Someone can teach me English, because I'm from Brazil and if you know how to speak Spanish, it's better for me.

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.

it is stable as it is in group 0 which have full outer shells of electrons