An eroded area of the stomach mucous membrane is called a peptic ulcer.
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Well, I think the answer would be, Both biomass and coal energies are inexpensive, but they release greenhouse gases.</span>
<span>Protein is made up of building blocks called amino acids</span>
Re: A car driver automatically brakes if a child dashes across the road.
<span>This is called a .............................................. reaction.
answer: reflex</span>