Answer:
red blood cells, or erythrocytesExplanation: I think that is right
The separation can easily be carried out on the basis of the difference in densities of polyehtylene terephthalate (PETE) and high density polyethylene (HDPE). To do this, we may grind the polymers into chips and then begin vibrating the mixture of the plastics. The more dense HDPE chips will settle to the bottom and the less dense PETE chips will remain at the upper portion.
The surface area is greater with the crushed solid so more of the material is exposed to the gas allowing more reactions