In this ecological pyramid , the amount of potential food available for each tropic level

a). remains the same
b). increases over time
c). decreases from bottom to top
d). increases from bottom to top

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.

The function of the excretory system is to control homeostasis and

What is the process by which biological parents pass traits such as hair type or eye color to their children