Give reason for the following:
Grains and crops should be washed properly before being consumed.
Grains and crops should be washed properly before being consumed because of the following reasons:
1. These days many grains have pesticides sprinkled on them to avoid pest attacks during their growth but these are very harmful.
2. Several medicines are used to keep the harvested grains fresh for a long time.
3. If grains are stored in bulk, cleanliness is the last option.