To fill your duvet, you will need a duvet cover and insert such as a down comforter or alternative. You will also need an iron and a spray bottle with lavender water, but these are optional. You need to check that your duvet insert is the same size as the cover.
The human teeth are as strong as a shark’s teeth.
Scientists have found that human teeth are just as strong as the teeth of sharks. This is even though human teeth are from a softer mineral compared to the ones found in a shark’s. The white enamel found on your teeth is even stronger than bone.