Each liter of air has a mass of 1.80 grams. how many liters of air are contained in 2.5x10^3 kilogram of air?

Which of the following best describes the formation of plasma?

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend? angle at which the ray strikes the medium color of the material density of the material temperature of the light wave