Earth worms have an a. hydroskeleton b. exoskeleton c. endoskeleton , birds have an a. b. or c. and spiders have a. b. c. anyone who answers this you so !

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.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?