Assume the volume of air inhaled and exhaled is 500 ml. calculate the difference (in ml) between the amount of oxygen inhaled and the amount of oxygen exhaled

Why is excretion necessary to maintain homeostasis?

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi, r^3 , where r is the sphere’s radius.

What do nitrifying bacteria convert