Which of the following is NOT one of the 3 V's that determines the type of volcano being formed?

Explanation:

Step-by-Step

Magma composition determines both eruption type and volcano type.

Composite cones are built of felsic to intermediate lava and shield volcanoes of mafic lava.

Cinder cones are made of small fragments of a variety of compositions usually from a single eruption.

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they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.