Question

The main source of energy for all human beings is

Answer 1

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Currently, the primary sources of energy used by humans include fuels, like coal, oil, natural gas, uranium, and biomass. All these fuels—except biomass—are nonrenewable. Primary sources of energy also include renewables, such as sunlight, wind, moving water, and geothermal energy.

Answer 2

Answer:

main source of energy is food.

it is necessary for us it make us able to do all works ..