Question

In what ways did food items offers cope for land distance and culture exchange

Answer 1

Introduction of new crops 
Food gets a new form such as from noodles to spaghetti. 
food become known to everyone, that once was not known by them 

Answer 2

Explanation:

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SER has no ribosomal particles on thesurface, hence look smooth. It helps in manufacturing of lipids and fat molecules. RER has particles of ribosome on the surface, therefore are rough in texture.