Your answer is correct!
Your answer is not correct
At every visit to the hairdresser, hair over 30 centimetres in length can be used for wigs, shorter parts go into the bin. In sum, quite a large pile of hair is thrown away day by day this way. An alternative may be based on the fact that hair can absorb fat and it does not lose this property even after cutting. A kilogram of hair can absorb eight litres of oil.
A French initiative "Coiffeur Justes" has been collecting hair from the stock of hairdressers since 2018 and makes rolls and felt mats out of it, which are later used as filters in polluted waters.
Feedback
Your start-up company has developed a free application, thanks to which small convenience stores can share their stock online for the supply of restaurants. This application brings a definite advantage to small shops, which are not afraid of competition from supermarket chains, and to restaurants, which can source a more local and 0 km supply.
The chef of one of these restaurants decides to move his business in the summer season to a nearby valley, famous for tourism. He would like to use the same service. Unfortunately, a closer analysis shows that mountain shopkeepers are old, do not use devices.