6. Earth is 4.5 billion years old. According to the figures above, there is very little crust that
is older than 280 million years. Which of these best explains this phenomenon?
a. The Earth is a young planet
b. Old crust usually dissolves over time
c. The Earth's crust is recycled at ocean trenches
d. We have no way to determine the age of crust that is older than 280 million years.
Examine the picture below The different colors on the continents represent where fossils



Answer :

b. Old crust usually dissolves over time

Explanation:

because the earth was here for a long time

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