Identify which properties of asbestos have made it a useful resource.Heat resistanceFlexibilityNutritional valueStrengthSound resistance

The properties of asbestos that have made it a useful resource are:

1. Heat Resistance: Asbestos is highly resistant to heat, making it useful in products and industries that deal with high temperatures. It doesn't burn easily and can protect other materials from heat and fire.

2. Flexibility: Asbestos fibers are flexible and can be woven into fabrics or mixed into cement. This makes it versatile for a variety of applications, including insulation and building materials.

3. Strength: Asbestos is a strong material that adds strength to other materials it is combined with. This makes it useful in construction and manufacturing.

4. Sound Resistance: Asbestos has sound-absorbing properties, which makes it useful in applications where noise reduction is needed, such as in building construction.

Note: Asbestos does not have nutritional value, so this property does not make it a useful resource.