Conduction: I would explain why I think so, but I think the answer itself explains why well enough so that I don't exactly have anything to add
Answer:
<em>The </em><em>part </em><em>of </em><em>central</em><em> </em><em>nervous</em><em> system</em><em> </em><em>are</em>
<em>the </em><em>spinal</em><em> cord</em>
<em>the </em><em>brain</em>
<em>the </em><em>cerebrum</em>
<em>the </em><em>cerebellum</em>
<em>hope</em><em> it</em><em> helps</em>
Answer:
All food chains start with energy from the sun.
Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus.