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mechanical process whereby air enters and leaves the lungs.
a diploid reproductive stage in the life cycle of many fungi and protists.
the loss of water vapour from the aerial parts of a plant through stomata or lenticels.
fats that are solid at room temperature and are found in animals. They are thought to be linked...
emitting (or giving off) radiation energy, which is harmful to living organisms.
waste water from sinks, washing machines, dishwashers, showers and baths, which can be used for...