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are chemical substances used in fast food,bakery items and packed and tinned food as we see in soft drinks?plan an activity to detect the presence of preservatives in food items?

Processed foods are foods that have been compromised by the addition of hormones, additives, preservatives, unnatural genetic material or other chemical or heat treatments that alter or destroy the natural healthy enzymes, fattwy acids, vitamins and minerals. We can Read the ingredient lists on the foods in the tins we buy from the shops. The food that are containing acids, nitrates and sulphates are not good for health. so we can avoid the food items containing this type of ingredients.