Some advantages
<span><span>Produce relatively low amounts of carbon dioxide (CO2).</span>Well-developed engineering knowledge. Single plant can generate high amount of power.</span>
Some disadvantages
<span>Radioactive waste, an extremely dangerous byproduct, needs careful monitoring for thousands of years. Accidents may create havoc on a large scale.<span>Uranium, the primary energy source, is estimated to be available only for the next 30 to 60 years without the use of high-efficiency breeder reactors.</span></span>
I think it's A. They have a cell membrane.
Hope this helps!
They are different because one is stronger than the other
