Question

why is defrosting necessary​

Answer 1

Over time, an accumulation of ice can form. Eventually this can block the circulation of the cold air through your fridge so while the evaporator is cold, the contents of the fridge are not as cold as you want them to be because the cold air cannot circulate effectively. This is why defrosting is required.

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Answer 2

Explanation:

Deforestation not only removes vegetation that is important for removing carbon dioxide from the air, but the act of clearing the forests also produces greenhouse gas emissions. The Food and Agriculture Organization of the United Nations says that deforestation is the second-leading cause of climate change