Process by which the internal structure of a mineral is altered by the addition or removal of elements. Change in phase (mineral type) and composition are due to the action of chemical agents. Chemical weathering is dependent on available surface for reaction temperature and presence of chemically active fluids.
<h2><u>Answer:-</u></h2>

✯ Synapse is the gap between neurons that ensures that information travels in one direction only.
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Therefore, the 2nd statement [B] is correct.
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<h3>
<u>Addit</u><u>ional</u><u> </u><u>Inf</u><u>ormation</u><u>:</u><u>-</u></h3>
A Synapse is a small gap at the end of a neuron that allows a signal to pass from one neuron to the next. Synapses are found where nerve cells connect with other nerve cells. Synapses are the key to the brain's function.
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The term synapse was first introduced in 1897 by Michael Foster in his "Textbook of Physiology" and derived from the Greek synapsis, meaning "conjunction."