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a v-shaped extension of the mammalian soft palate, which closes the opening to the nasal passages during swallowing.
plants that live in water or very wet conditions.
single-celled algae that have two flagella and are found mainly in seawater but are also common...
the breakdown of food into smaller pieces by chewing and peristalsis.
to change over a period of time in response to new environmental conditions.
method or system for grouping different species of organisms.