47. What two systems work together to create movement? A. Circulatory and endocrine
B. Nervous and muscular
C. Respiratory and lymphatic
D. Muscular and digestive

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation

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.