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Provide the major organic product of the following.
Usable Energy
Energy in forms that can be directly used by humans or converted to other forms of energy for work, including mechanical, electrical, and chemical energies.
Biomass
The total mass of all living organisms in a specific area or volume; often used as a renewable energy source derived from plant and animal material.
Trophic Level
The position an organism occupies in a food chain, defined by the number of steps it is from the primary source of energy (usually the sun); it indicates the organism's role in the transfer of energy and nutrients through an ecosystem.
Water Vapour
The gaseous phase of water, which is invisible and present in the atmosphere, contributing significantly to the greenhouse effect.
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