hellpp plleaase i give ~brainliest~ !the hindenburg could fly because the hydrogen that filled it was “lighter than air.” yet, hydrogen is incredibly flammable. describe your own design for the ideal air transport machine.

(I don't know if this is right) Being lighter than air relates to density. There are also other noble gas elements with density lighter than air, such as helium. I would fill it with helium and regulate the amount due to the air pressure and altitude wanted/needed. This could be a good response for a middle school course, but if you need an extended response, then provide some scientific terms too.

The answer is c establishing proper sleep hygiene