A caldera viscous or acidic lava plugs the vent of a volcano this leads to violent eruptions this causes the crater to be blown off the top of the volcano subsides or collapes forming a basin shaped depression.called a caldera .hope this helps
Answer:
They tend to be smarter at it.
Usually when the clouds are heavy because of too much evaporation
The Gulf Steam
---------------------
Letter B- Alaska because of the weather