Interstellar clouds are not primarily composed of nitrogen and oxygen. Interstellar clouds are generally an made up of gas, plasma, and dust in our and other galaxies.
An interstellar cloud can be defined as the accumulation of gas, plasma and dust in our galaxy or other galaxy.
The composition of interstellar clouds are determined by studying the electromagnetic radiation that is received by radio waves, gamma rays on the electromagnetic spectrum.
When The electromagnetic radiations was studied then organic compounds like vinyl chloride and methanol which was not expected.
chemical weathering occurs on the surface of minerals, the water and acids that control chemical weathering require access to the surface. Physical weathering breaks the rock to provide that surface
The answer is A because the information is stating that when one chemical combined with another chemical, it had new properties which is essentially answer choice A
