What is the Mid-Atlantic Ridge?
Which is the most volcanically active mountain range in the world?
What are hydrothermal vents?
Why are scientists interested in hydrothermal vents?
Why do you think animals of the deep sea hydrothermal vents are so different from the animals that live elsewhere on the planet?
Seamounts are very easy for scientists to study
What is an ocean trench?
What is NOT a reason people have trouble going to the bottom of the Mariana Trench?