The correct answer is <span>C. You cannot view live specimens because the necessary preparation kills cells. </span>
The answer is pretty self-explanatory. Unlike it, regular microscopes can view living creatures such as bacteria or similar.
During nitrogen fixation, bacteria breaks nitrogen gasses down into a usable form for plants.
If it’s referring to sea floor spreading then the answer is D, I hate analogies but I think it’s talking about the mantle convection that slowly breaks away at the lithosphere
Http://highered.mheducation.com/sites/007246268x/student_view0/chapter13/
No that's the respiratory system
