What happens to the blood which reaches the cells from the capillaries?
food and co2 pass to cells, o2 pass to blood
wastes and co2 pass to cells, o2 pass to blood
co2 and o2 pass to cells, wastes pass to blood
food and o2 pass to cells, co2 and wastes pass to blood

Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon

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