Discover new information and get your questions answered with IDNLearn.com. Find in-depth and accurate answers to all your questions from our knowledgeable and dedicated community members.


Why do geologists think Earth's core contains mostly iron?
OA. Comets contain more iron than Earth's crust does.
B. The entire core is a solid mass.
C. Iron is the lightest element.
D. The crust also contains mostly iron.