. Bio films are
(a) Colour films used by biologists to photograph living
organisms
(b) Photo micrographs of micro-organisms from various habitats
(c) Accumulations of micro-organisms at surfaces such as
those of a rock, a tooth or an oil droplet
(d) Photographic films made through fermentation processes
of certain industrial micro-organisms
Answer / guest
(c) Accumulations of micro-organisms at surfaces such as
those of a rock, a tooth or an oil droplet
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