If a typical animal cell contains 2m of DNA, and is the size of roughly a strand of human hair, how is all of that material squeezed into an even tinier compartment (the nucleus)

DNA is tightly packaged by histone proteins

Explanation:

Deoxyribonucleic acid (DNA) is a negatively charged molecule packaged into the cell nucleus by means of positively-charged proteins, thereby forming a nucleoprotein complex. In the first place, DNA is wrapped around dimers of four core histone proteins (H2A, H2B, H3, and H4 ), thereby forming nucleosomes consisting of histone octamers and 146 bp of lineal DNA. The nucleosome represents the basic unit of the chromatin organization. Subsequently, the nucleosomes are arranged into 30-nanometer (nm) chromatin fibers, which are then organized into higher loops (300 nm). During the cell division cycle, these higher-order chromatin loops are supercoiled into chromatids (700 nm) and chromosomes (1400 nm).

for the points

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.