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Refrigeration is relatively new to us. For thousands of years or more, people have been inventing creative ways of preserving food without the benefit of cooling. Natural food preservatives include vi ...

Determine which of the following substances best preserves an apple: lemon juice, lemon juice plus ice, citric acid, sugar syrup, pure ascorbic acid?It is an educational content by education.com.By cl ...

This project explores new uses for an old lighthouse. The goals of this project are: To develop a modern interior lighthouse design. To further encourage lighthouse preservation and restoration.It is ...