The ocean and some continental land masses are over 4 billion years old. How old are the oldest marine sediments?
a) More than 4 billion years old
b) About 1 billion years old
c) About 180 million years old
d) Less than 1 million years old
Answer: C
The ocean and some continental land masses are over 4 billion years old. How old are the oldest marine sediments?
a) More than 4 billion years old
b) About 1 billion years old
c) About 180 million years old
d) Less than 1 million years old
Answer: C