What part of the Earth makes up only 1% of the Earth's mass?

How much of the Earth's mass does the core contain?

The outer core is composed of

The density of the outer core is __________ than the density of the inner core?

Parts of the core have a greater temperature than parts of the _____________.

The density of the continental crust is

The density of the oceanic crust is

Contains rocks up to 4 billion years old?

Contains rocks 180 million years old.

What part of the crust is composed of all types of rocks: igneous, sedimentary and metamorphic?

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