Still confused about reverberation as in wikipedia it is also written that reverberation is the reflection of sound after removing original sound. Echo is also not up to the mark but if the answer is not NONE OF THESE what it is the most
accurate one. The link you provided also does not clarify it.


Definitely Vitamin C is needed in small amount it also acts as antioxidant in body. Actually all the sugars (carbohydrates) are ultimately converted into monossacharides. More than 80% of energy that we use comes from burning of monossacharides in the body.

And the last thing haematite and magnetite are not iron oxides these are IRON ORES not oxides

__________________
Man is harder than iron, stronger than stone, and more fragile than a rose.