Examination by a test; experiment, as in chemistry, metallurgy, etc.
The most appropriate answer is C !! Cs is most electropositive and thus least electronegative !!
Gasoline use contributes to air pollution
Gasoline is a toxic and highly flammable liquid. The vapors given off when gasoline evaporates and the substances produced when gasoline is burned (carbon monoxide, nitrogen oxides, particulate matter, and unburned hydrocarbons) contribute to air pollution. Burning gasoline also produces carbon dioxide, a greenhouse gas.
Answer:
2-to produce copies of a DNA molecule
