Samples Can Be Taken from the Deep Sea Floor By

Q3: Rift valleys are characterized by _ faults

Q4: A chain of volcanic islands that form

Q5: Some of the world's richest offshore petroleum

Q6: Beyond the Mid-Oceanic Ridge system are flat,

Q9: A/an _ _ is a deep trough

Q10: The part of oceanic crust made up

Q12: The Mid-Oceanic Ridge system is the Earth's

Q13: The depth of the central parts of

Q28: Oceanic crust is mostly composed of _.

Q81: The west coast of South America is