How do monosaccharides combine to form polysaccharides

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.

carbon

explanation:

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"