D-Dolphin A dolphin is an animal from the mammal group. It also is a vertebrate, (has backbone). It lives in water and comes to surface for air now and again
E-Electromagnet An electro magnet is a wire wrapped around a piece of metal. As long as an electrical current is going through the wire, the metal gives a magnetic pull and acts like a magnet.
F-Frog A frog is an animal, and is a vertebrate, (has backbone). A frog is an amphibian, which is an animal that comes from an egg, is born with gills, goes through metamorphosis, and turns into an adult with lungs.