Classify this chemical equation as a combination/synthesis , decomposition, single replacement, double replacement, or combustion. pb(s) + hg2so4(s) --> pbso4(s) +2 hg(l)

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 positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be