Question

How do moisture and temperature affect the food grains?

Answer 1

HEY!!

HERE IS YOUR ANSWER   :-  

The effects of Temperature and Moisture on Stored Grains. The most influential factors in the storage of grains is moisture and temperature. ... Grains stored with these moisture levels will spoil and become unfit for food and can spontaneously ignite under ideal conditions

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Answer 2

Food is advised to store in an environment which has less temperature and moisture.  

High humidity(High temperature and high amount of moisture in air) led to growth of microorganisms which led to rotting of food grains. So temperature and moisture are important factor which affects the life of food materials.