Virus, Human and Earth


mass of a virus: 10-21kg
mass of a Human: 75 kg

mass of the Earth: 6 x 1021 tons

Give you answer in scientific notation to three significant figures
note that there is one non-zero number before the decimal point, and two figures after the decimal point.

What is the quotient of the mass of a virus by the mass of a Human?
x 10