Which statements about hydrothermal vents are true? Choose all correct answers.

Hydrothermal vents can eventually close up.

Eight-foot long worms and blind fish may live near a hydrothermal vent.

Minerals and gases may cause black smoke to flow from a hydrothermal vent

Cold water flows from hydrothermal vents and is warmed by the surrounding water

2 and 4

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Explanation:

danielu suge pula

explanation:

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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