Seedless plants produce spores.Spores can develop into an adult without fusing with another cell.Seed plants produce seeds.Seeds are formed when the female reproductive structure matures; this occurs after fertilization.
That is the answer (:
<span>Two atoms of hydrogen and one atom of hydrogen </span>
Answer - Speciation
Reasoning - Pretty much what has happen was the two species has evolved over the course of evolution if you want to put it that way why the are incapable of breeding.
E Coli bacterium are about 2.0 micrometers in length and .25 to 1 micrometer in diameter. In comparison, a red blood cell is about 6 to 8 micrometers in diameter and a thickness that ranges from .8 to 1 micrometer in the center to 2 to 2.5 micrometers at the thickest point.