Supercritical extraction uses carbon dioxide, which can extract many good things from plants that cannot be obtained by other methods.

Dry ice (solid carbon dioxide) is used for medical cooling and artificial rainfall.

Used to make carbonated drinks.

Make a fire extinguisher.

Make raw materials to raise the temperature of the greenhouse.

Disadvantages: Carbon monoxide is a toxic gas. If the content in the air is 0. 1%, it will cause poisoning. If the content is greater than 1%, it may lead to death. The cause of poisoning is that carbon monoxide reacts with hemoglobin in human blood to produce carbonyl hemoglobin, which makes hemoglobin lose its oxygen transmission ability and makes human body seriously deprived of oxygen. Gas containing carbon monoxide is called gas poisoning.