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the last part of the mammalian large intestine, which stores faeces until it can be expelled from the body (defaecation).
to change over a period of time in response to new environmental conditions.
two or more forms of a particular chemical element, that have the same number of protons in the...
blood vessels that transport deoxygenated blood from the heart to the lungs.
specialised proteins which catalyse chemical reactions and thereby speed up chemical reactions...
epithelial tissue consisting of a single layer of cells.