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b. Stratiform (St). Stratiform clouds are formed when an entire layer of stable air is
1ifted. They are characterized by their stratified or layered appearance, and are called
stratus clouds.
c. Cirroform (Ci). Cirroform clouds are formed from moisture that has been 1ifted so
high that it becomes ice particles.. They are often nearly transparent so t that large
amounts of sky can be seen through and around them.

