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a serious and potentially fatal medical state caused by an allergic reaction, in which sufferers experience difficulty in breathing and a drop in blood pressure.
mass extinction event of 65 million years ago, in which about 85% of all species on Earth died...
the inner region of the kidney, striped in appearance, made up of renal pyramids.
a general term form any plant diseases caused by different bacteria and fungi.
a sensation of unease and discomfort in the upper stomach with an involuntary urge to vomit. A...
an atmospheric gas made of three oxygen molecules bonded together (O3).