Both organisms are composed of cells, the basic unit of life, with each cell surrounded by a cell membrane. The biggest difference between prokaryotes and eukaryotes<span> is that </span>eukaryotes<span> have a nucleus. They also have other membrane structures called organelles.</span>
The answer is segment Segment
It is B. 3 categories of fish...category Agnatha (aka jawless fish)
category Chondrichthyes (aka cartilaginous fish)
category Placodermi (aka armoured fish)
Answer:
A process of change in a population through genetic variation over time.