Question

now a days Wafers and other food is supplied in sealed air tight packets what do you think the reason behind it

Answer 1

this is bcoz food will not react with the moisture and get spoilt

Answer 2

We are living in the modern era where every perspective of our daily life has became more and more efficient through ages.

Nowadays the food products are sold in airtight packages.With Nitrogen gas sealed inside of the package.

Airtel packages secure the fresheners and prevent the contamination of that food product.Which extend the expiry date of that food product.

That's why nowadays wafers and other food is supplied in sealed air tight packets .