The lab procedure involves two trays of plants. select all factors below that are the same (constant) for both trays. the remaining factors are the variables of the lab procedure.

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.