The concentration of carbon dioxide in the atmosphere has been gradually increasing for many years. how might this increase affect photosynthesis

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.

answer; both surfaces of the membrane are nonpermeable