Final answer:
Natural vs. synthetic cleansing materials and the negative effect of sodium benzoate preservative.
Explanation:
Natural materials used in cleansing:
- 1. Soap: derived from natural fats and oils.
- 2. Citrus fruits: natural acids present in citrus fruits can help in cleaning.
Synthetic or chemical cleansing: involves the use of man-made detergents or cleansers that are not naturally derived, such as sulfonate detergents.
Negative effect of sodium benzoate: Sodium benzoate, a preservative, can sometimes cause allergic reactions and has been linked to hyperactivity in children.
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