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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.
the protection of species, habitats and ecosystems and the management of natural resources.
consists of the pectoral and pelvic girdles together with the arms and legs.
also known as sodium hydrogen carbonate. It is a crystalline white solid that usually appears as...
biological classification group (taxon) that is divided into species (the plural of genus is...
a hormone produced by the pituitary gland, which helps to limit the amount of water lost from...