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Yes, it is possible but the natural sponge is expensive; artificial sponge is frequently used as heat insulator.
Not if it is an artificial sponge.
Think about it and compare artificial with nature
Natural is to nature as artificial is to artifice.
The definitions is : Natural- A natural plant Artificial- An artificial one
artificial
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Natural silk is a proteinic fiber (sericin and fibroin).
artificial can't be found in natural environment and are maken in labs
Artificial. Man made.
artificial