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bead-shaped proteins that occur in chromosomes.
substances that have a harmful effect on the environment and also on human health.
single-celled algae that have two flagella and are found mainly in seawater but are also common...
cone-shaped mammalian teeth used to grip and tear off pieces of meat.
the abiotic components relating to the physical nature of an area.
minerals and vitamins that are taken as nutritional supplements to regular food (in the form of...