If, like other chemical substances, the solid state were denser, lakes would freeze, from the bottom up, into great blocks of ice that would never melt.
(the solid state; were denser; ) (lakes; would freeze; from the bottom up, into great blocks of ice) (great blocks of ice; would never melt; )
the solid state lakes great blocks of ice
were denser would freeze would never melt
from the bottom up, into great blocks of ice