Answer:
the us has 63 national parks, which are congressionally-designated protected areas operated by National Park service, an agency of the department of the interior.
1. The last stage of the cell cycle is called cytokinesis!
2. I believe this is called a histone. If not, try chromatin!
Here take a look at this, https://quizlet.com/13481242/levels-of-biological-organization-mrs-lloyd-flash-cards/