Find the percent of each element in the compound BaCl2. A)
barium 66% chlorine - 34%
B)
barium 349 chlorine 66%
barium 799 chlorine 21%
D)
barium 21% chlorine -79%

Ba=66% Cl=34% So its A

Explanation:

the answer to your question is c.

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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.