Is this multiple choice or do you just need an example?
Answer:
Scientists used major changes in life forms in the fossil record to form the geologic time scale.
The United States is an MDC.
Answer: 2) MDC or the second option.
I really would think something besides the question
The answer would be : D. Ocean
The earth consist of more than 70 % of water.
And from that 70 % ,
97 % of them is located on the Ocean
hope this helps
