Question

question 19 not yet answered points out of 5 flag question magnetic anomalies (magnetic stripes) on the sea floor are used to show: select one: a. that the ocean formed very early on in earth history b. that the continental margins are mostly active margins c. that the ocean basins do not change size d. that the sea floor is spreading

Explanation:

Magnetic anomalies (stripes) on the sea - floor are evidence of sea - floor spreading. As new oceanic crust is formed at mid - ocean ridges, the magnetic minerals in the cooling lava align with the Earth's magnetic field at that time. Reversals of the Earth's magnetic field create alternating magnetic stripes, which show that the sea floor is moving apart.

Answer:

D. that the sea floor is spreading