D is the answer. Since it’s caused by a subduction.
It is gotten from the atmosphere by respiration, burning of fossil fuel, decay, excretion and decomposition of organic matter, fossilization etc
Not all mixtures are solutions. It has to be a special homogeneous bond mixture composted of two or more substances
Around 1 billion nerves reside in your body! The nerve cells unlike many other types of cells does not perform mitosis resulting in paralyzation. :)
