Compare shield volcanoes and composite volcanoes.

Composite volcanoes very steep sides at top. Shield volcanoes gently sloping sides.

When a shield volcano eruptions they are less explosive than composite volcanoes. Composite volcanoes are steep and shield volcanoes are more sloping. Shield volcanoes also have low viscosity and fast flowing magma and the composite volcano's magma is low viscosity and is slow flowing. Shield volcanoes magma is also hot and composite volcanos magma is cooler.
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Answer:   [b]:   "cultural" .