These systems control water flow and often generate hydroelectric power while creating storage reservoirs.

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Your new ahaDams

Dams: Structures built to control the flow of water and generate power. Source: Dam ↗

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06These systems carve passageways through earth or rock, enabling routes through mountains or beneath water.RECALL
Tunnels
Tunnels carve passageways through earth or rock, enabling routes through mountains or beneath water.
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07These building fire-protection systems discharge water through heads typically activated by heat.RECALL
Fire Sprinkler Systems
Fire sprinkler systems automatically release water on a detected fire, dramatically cutting deaths and damage.
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08Cement, water and aggregate combine to make this widely used construction material.RECALL
Concrete
Concrete, made from cement, water, and aggregate, ranks among the world's most widely used building materials.
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