<u>Answer</u>:
Crust is destroyed: A. near ocean ridges.
<u>Explanation</u>:
Crust can be explained as the outermost shell of terrestrial planet. The formation of earth is with three layers. These are mantle, core and crust. The formation of crust is with solid rocks as well as minerals. The beneath part of crust is mantle and it also made with hard rock and minerals. The layers of earth are constantly contact to each other. The formation of oceanic crust is at mid ocean ridges while it has been devastated at the subduction zones. According to some research, the crust has been at its higher levels of destruction.
The given blank can be filled with two electrons.
The K, L, M, N are the four shells in an atom. The K shell is the initial that is present nearest to the nucleus of the atom, and it comprises two electrons. The L shell can withstand eight electrons, M shell can withstand eighteen electrons, and however, the atom attains stability if the last (valence) shell comprises eight electrons.
1. An infinitely dense atom of matter explodes, releasing all matter in the known universe.
2. This matter clumps together forming rocks and dust; that which doesnt compact remains as gas.
3. The rocks and dust are pulled in to each other by their own gravity. These clumps get bigger and bigger, and form planets.
4. Gas and dust clouds, better known as nebulae, (sing. nebula) begin to react, clump together and generate heat. Stars are formed out of these nebulae (unsure of the process).
5. The stars, with their powerful gravitational pulls, drag in planets to form solar systems. This happens on a larger scale as well, as groups of millions of stars are formed into galaxies, huge swirling discs containing millions of stars each.
That's where we are today.
