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colourless, odourless highly poisonous gas.
gas consisting mainly of methane and carbon dioxide, which is produced as a result of...
the first step of cellular respiration in which glucose is converted to pyruvic acid with small...
undifferentiated cells found in almost all organisms that have the ability to develop into any...
a tough substance made from a modified polysaccharide that contains nitrogen. It is the main...
a cluster of capillaries situated inside Bowman's capsule in the nephron.