All glacier ice is derived from snow where the annual snowfall exceeds melting, and is not, like ordinary ice, formed directly by the freezing of water.
(All glacier ice; is derived; from snow) (the annual snowfall; exceeds; melting; L:snow) (All glacier ice; is not; like ordinary ice) (ordinary ice; formed directly; by the freezing of water)
All glacier ice the annual snowfall All glacier ice ordinary ice
is derived exceeds is not formed directly
from snow
melting L:snow
like ordinary ice
by the freezing of water