What role do roots play in photosynthesis?

What does homeostasis means in biology?

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.

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what