Answer – Chromosome
In eukaryotic nuclei, DNA and proteins are packaged into organized cellular structures known as Chromosomes. Genetic material is housed in the nucleus where is it tightly packed into linear chromosomes. Chromosomes consist of a complex of DNA and protein which is known as chromatin. Chromatins are organized into subunits called nucleosomes
I’d say, Humans have the ability for rational thought
Hope it works. Good luck :)
Answer:
D. They float on convection currents in the mantle.
Explanation:
Http://www.livescience.com/22537-skeletal-system.html
