Annelids, unlike roundworms (or flatworms for that matter) are segmented. That is after all how they get their name (annelida = little ring). Annelids also have a very complex organ system.Roundworms only possess a reproduction system as they usually live in an organism's intestines and don't need to digest food.nnelids, unlike roundworms (or flatworms for that matter) are segmented. That is after all how they get their name (annelida = little ring). Annelids also have a very complex organ system.
A good quality GMRS radio, or a commercial radio programmed to use GMRS frequencies, can probably get a range of about five miles or so. A good base or repeater, with a good antenna mounted high off the ground should be able to get a range of 15 to 25 miles.
GPR can have applications in a variety of media, including rock, soil, ice, fresh water, pavements and structures. In the right conditions, practitioners can use GPR to detect subsurface objects, changes in material properties, and voids and cracks. GPR uses high-frequency (usually polarized) radio waves, usually in the range 10 MHz to 1 GHz. A GPR transmitter emits electromagnetic energy into the ground.