The earth has enough gravity to do that
The water molecules received enough energy through the heat for them to change to a liquid state by unfixing themselves from their fixed positions.
The sort of adaptations that are usually passed to the offspring of an organism is the adaptation that helps it survive in its environment.
The balance chemical equation is follow,
2 I⁻ + SO₄²⁻ + 4 H⁺ → I₂ + SO₂ + 2 H₂O
According to this reaction, 2 moles of I⁻ reacts with 1 mole of SO₄²⁻ to produce 1 mole of I₂ and 1 mole of SO₂.
Result:
So with the formation of 1 mole of I₂, 1 mole of SO₂ is produced.
