What is an oxidizing agent responsible for? 1.Oxidizing another substance
2.Starting oxidation-reduction reaction
3.Ending oxidation-reduction reaction
4.Reducing another substance

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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.

the dissolution of polymer can be thermodynamically described in 2 steps.

a electronegativity decreases beacuse the size of nucleus is bigger.