UK: Prince Charles Hosts World Allergy Summit in Scotland.

The video discusses the properties of natural materials, particularly their fire resistance and use in insulation. It compares these with man-made substances, highlighting the cost and safety issues associated with the latter. The video also explores the problems caused by man-made materials when they burn and suggests solutions, including the use of flame retardants.

What is a notable property of the natural material derived from trees?

• It is highly flammable.

• It is not suitable for insulation.

• It is resistant to burning.

• It is very expensive to produce.

Why are man-made substances considered problematic when they burn?

• They release harmful substances.

• They are too expensive to produce.

• They do not burn at all.

• They are not widely available.

What is a suggested benefit of using natural materials over man-made ones?

• They are more colorful.

• They are safer when exposed to fire.

• They are easier to manufacture.

• They are lighter in weight.

What is a challenge mentioned in specifying natural materials for use?

• They are not eco-friendly.

• They are not durable.

• They are difficult to specify.

• They are too heavy.

What is added to enhance the safety of materials?

• Flame retardants

• Waterproof coatings

• Color pigments

• Soundproof layers