What do potatoes, wood and lobster shells have in common?

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.

24. how are vaccines used to keep people healthy?

Which rate indicates the number of children that would be born per women if she were to live to the end of her child-bearing years