Some can be, for instance stratocumulus cloud trapped beneath a temperature inversion. As the inversion breaks down through the day from heating, the tops of the cloud become more ragged.
These are cumulus clouds.
Cumulo-nimbus clouds. Sometimes they grow so tall that they develop an 'Anvil' (flat) top at icing level.
Yes, often they do. This structure is often called an anvil.
Air in updraft reaches the tropopause and spreads out horizontally.
Yes, Cumulus clouds have flat bottoms.
clouds.
Clouds in flat layers are called stratus.
They don't
cumulous
Stratus is the cloud in flat layers
c. cumulus clouds
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