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

there is no

explanation:

the dark variety, as they are not visible on the dark tree barks

explanation:

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?