Question

you are advised to use eco friendly appliances like refrigerators and ac explain giving reasons how these devices cause harm to the environment

Answer 1

These devices firstly take a lot of energy to transfer heat from low temp to high temp which against the conc. Gradient
And then they also evolve cfc previously ...
Which can harm our ozone layer of earth by which more and more uv rays come and causes cancer..

Answer 2

Answer:

If not treated, refrigeration and air conditioning appliances contribute to depletion of the ozone layer, global warming, increased health risks, rising sea level, changes to wildlife habitat and extreme weather conditions.

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Explanation: