Which element is most abundant in the mantle and rocky layers of the Earth?

The mass-abundance of the eight most abundant elements in the Earth's mantle is approximately: oxygen 45%, magnesium 23%, silicon 22%, iron 5.8%, calcium 2.3%, aluminum 2.2%, sodium 0.3%, potassium 0.3%.

Explanation:

there ya go mate ^^

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

the rearrangement of particles in a physical change. hope this