Compared to the cnidaria, platyhelminthes has a select one: a. more complex nervous system b. more complex coelom c. less complex nervous system d. less complex coelom

During the process of meiosis, special cells called gametes are formed. gametes only have half the number of chromosomes that the other cells in the body have. what form of reproduction do organisms that produce gametes use?

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.

How are viruses different from eukaryotic cells?