Sugar is dissolved in water but when the water is evaporated off, the sugar crystals reform again. Chemical change or physical change?

Physical Change

Explanation:

the the sugar is still there even though it was dissolved in water

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.