PLEASE HELP ASAP 100 POINTS REAL ANSWERS ONLY FRESHMAN BIO

Which muscle is responsible for inhalation ?

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.

You see a white marker with an orange circle and black lettering. what does this marker tell you