In the nucleus, DNA forms a complex with proteins. This complex is called chromatin and is formed when the DNA wraps around nuclear proteins and then wraps around itself multiple times to condense the DNA into a smaller volume.
1. the history of Western civilization. the ancient civilizations of Mesopotamia and Egypt. Synonyms and related words. Culture, society and civilization: advanced, civilisation, civilise...
Neolithic means new stone, even though agriculture was the crowning achievement of the period. Civilizations started out small. Agriculture at first tended to tie only small groups together. These groups also all settled along rivers, important as a reliable and predictable source of water.