Answer:
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0% considering you didn't insert the question...
I think it’s loss of ozone layer
It forms the outer layer of a cell. It gives an animal cell its shape. It is selectively permeable.
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Answer:
Energy sustainability can best be achieved by using the renewable resources.
The renewable resources are the resources like water, wind and sun that can be renewed again and again after it is consumed once.
The term sustainability can be defined as the resources that can be used in the present generation and can be saved for the future generations as well.
So, sustainability can be best achieved when renewable resources are used.