What is the difference between an autosome and a sex chromosome

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.

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

What are the student's observations and inferences before he starts his investigation?