Is Windmill renewable or nonrenewable ?

renewable

Explanation:

One wind turbine can be sufficient to generate energy for a household. Because wind is a source of energy which is non-polluting and renewable, the turbines create power without using fossil fuels. That is, without producing greenhouse gases or radioactive or toxic waste.

A windmill can be abundant to generate power or energy for a house.

WHY YOU MAY ASK?: Because wind is a origin of power which is non-contaminating and renewable.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

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