Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.