Examlex
The vast majority of today's economic activity around the globe is powered by carbon-based sources of energy.Which of the following is not considered a carbon-based source of energy?
Oxygen
A gaseous element essential for cellular respiration and energy production in living organisms, also used medically to support breathing.
Catheter
A flexible tube inserted into the body for removing fluids or introducing medication.
Trachea
The windpipe, a tube that connects the pharynx and larynx to the lungs, allowing for the passage of air during respiration.
Tracheostomy Supplies
Equipment and products used in the care and maintenance of a tracheostomy, including tubes, cleaning kits, and speaking valves.
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