One evolutionary explanation for why lizards living in the same part of the habitat would have similar characteristics is adaptation. It is a function or structure that is very common in lizards and other animals. If the lizards are leaving in a same part of habitat they will have the same characteristics which they will adapt coming from the same habitat.
Iron is a major component of red blood cells. The oxygen you breathe bonds to the iron in your red blood cells. If you had no iron in your body you would likely die.
