The oldest seafloor is a no more than 280 million years in old because
A)Earth is only 280 million years old.
B)the ocean floor subducts during plate collisions.
C)hot spots continuously destroy the ocean floor.
D)the ocean floor is pushed up onto continental material during plate collisions.

Question

Quizplus · Accepted Answer

The oldest seafloor is no more than 280 million years old because it continuously subducts during plate collisions, meaning that it is constantly being recycled and replaced with newer seafloor. This process prevents the seafloor from becoming older than 280 million years. Therefore, option B is the correct answer.

The Oldest Seafloor Is a No More Than 280 Million