How are hydrothermal vents formed? Why are scientists interested in hydrothermal vents?

What clues tell you that you are close to a vent?

• Boiling Water

• Fish swimming away

• Black Smoke

• Bubbles

How would you get close to observe the vents?

• Special Suit

• Robot

• Camera

• Just swim up to it

Vents can reach an astonishing ​ (a)   temperatures.

• 750
• 100
• 500
• 7,500

Why have only three people traveled to the bottom of the Mariana Trench?

• Its to expensive

• The pressure, depth, and temperature of the trench

• It is to long

• It is too dark

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