I believer it is the last option
Answer:
<h2>
<em>photosynthesis</em></h2>
<em>in</em><em> </em><em>this</em><em> </em><em>process plants use carbon dioxide</em><em />
It's the endocrine system. The endocrine system deals with hormones and glands, such as the pituary gland. Hope this helps!
During mitosis the four centrioles appear visibly and move to the ends of the nucleus one pair at each end<span> then they produce a series of threads that attach to the chromosomes During cell division the threads split the chromosomes and drew them towards the centrioles</span>