which happens to a developing child first? A. The eyes are able to see B. Teeth begin to form C. The heart begins beating D. Eyebrows appear

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.