PH 1

How often does the American Dental Association recommend replacing toothbrushes?

• Every month

• Every six months

• Every three to four months

• Once a year

Which type of toothbrush had the greatest environmental impact according to the life-cycle assessment?

• Plastic manual toothbrush

• Electric toothbrush

• Bamboo toothbrush

• Plastic manual with replaceable heads

What material is primarily used to make plastic toothbrushes?

• Polypropylene

• Polyethylene

• Polystyrene

• PVC

Which toothbrush type was found to be the most sustainable in the study?

• Bamboo toothbrush

• Standard plastic toothbrush

• Plastic manual toothbrush with replaceable heads

• Electric toothbrush

What is a significant environmental concern regarding bamboo toothbrushes?

• They may hinder biodiversity

• They are not biodegradable

• They are made from fossil fuels

• They are too expensive

What is the main component of the bristles in The Humble Co.'s toothbrushes?

• Bamboo

• Nylon

• Castor oil

• Cornstarch

What innovative feature does Suri's electric toothbrush offer?

• It is disposable

• Users can repair it themselves

• It has a self-cleaning mechanism

• It is made entirely of bamboo

What percentage of plastic waste is estimated to come from consumer products according to the OECD?

• 14 million tonnes

• 43 million tonnes

• 10 million tonnes

• 380 million tonnes

What is a major challenge in recycling plastic toothbrushes?

• They are too cheap to recycle

• They are made from multiple polymers

• They are biodegradable

• They are too large

What is the goal of The Humble Co. regarding their toothbrush handles?

• To make them fully plastic

• To ensure they are 100% plant-based

• To make them disposable

• To reduce their size