Answer:
It is called Magnetic Domain.
Explanation:
This simply explains that when magnetic moment of a group of atoms in a certain material that is magnetic is aligned in one direction or their magnetic poles.
In materials with ferromagnetic compositions, certain groups of atoms band together into areas which are known to be domains; in this domains, all the electrons posses the same magnetic orientation. In a lot of materials, arrangement of atoms are in a way that the magnetic orientation of one electron cancels out the orientation of another.
Answer: Option 1 is the correct answer
Archaean eon
Explanation:
You are in the Archean Eon era because the it was early in the Archean that life first appeared on Earth. The most two earlier of the formal divisions of Precambrian time (about 4.6 billion to 541 million years ago) and the period when life first formed on Earth It began about 4 billion years ago with the formation of Earth’s crust and enlongated to the begining of the Proterozoic Eon 2.5 billion years ago; the latter is the second formal division of Precambrian time.
In the Archean eon there are unsual landscapes no rocks are preserved from this stage. The earliest terrestrial materials are not rocks but minerals.
Throughout the Archean, oceanic and island arc crust was produced semi-half way.
You cannot breathe because there was no oxygen on the Earth. Oxygen was only present in compounds such as water and chemical reactions change to carbon containing molecules that form simple living cells that does not require oxygen.
The atmosphere is the answer
Hope I helped you
Calcite is the most common rock