1c – breathingThe acronym S.C.U.B.A stands for Self-Contained Underwater Breathing Apparatus, and was coined by Dr Christian Lambertsen in 1954 – a new name for his earlier invention, the Lambertsen Amphibious Respiratory Unit .2b –.
MOST of us do not remember, but not that long ago people did not go into the oceans. Sure, they sailed on the surface and swam in protected lagoons, but
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