Answer:
Cell culture can be used toproduce fat-soluble vitamins. Cell culture can be used to producesteroid hormones. Cell culturecan be used to produce clones.Cell culture can be used toproduce complex proteins
Explanation:
This is astronomy not biology,
But anywho, From what I can remember, Copernicus's heliocentric theory stated that the planets orbited in perfectly circular orbits. In reality, they are shaped like ellipses (ovals).