Question

Basalt, formed from magma, contains iron-rich minerals. Why is this important? A. Iron is rich in nutrients and makes the soil easily identifiable. B. Iron is one of most abundant elements and can be found on every continent. C. Iron is magnetic and records the orientation and direction of Earth's magnetic field. D. Iron is magnetic and it triggers the reversal of Earth's magnetic field.

Answer 1

Iron is magnetic and records the orientation and direction of Earth's magnetic field.

Answer 2

The correct answer from the choices listed above is option C. Basalt is important since it contains iron-rich minerals that are magnetic and used to record the orientation and direction of Earth's magnetic field.