Struggling with your prescribed literature?
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symbiosis where one organism lives on another (on the outside of another).
describes a condition that is present at birth.
a state in which the body has become dependent on a chemical substance in order to function.
the effect of the relative lengths of daylight and darkness on the physiology and behaviour of...
preserved remains or traces of organisms that lived long ago.
the first part of the intestine, from the pyloric valve of the stomach to the caecum. It...