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minerals and vitamins that are taken as nutritional supplements to regular food (in the form of a drink, tablet or 'shake') which aims to provide nutrients that may be missing or in inadequate quantities in a person's diet.
the neurons that link motor and sensory neurons within the central nervous system.
an organism that helps to spread a disease, but is not infected with the disease.
barrier made of coral (a living organism consisting of animal and algal tissues) that lies in...