Euglena contain chloroplasts. when light is limited, they can eat particles to obtain energy. are these organisms classified as heterotrophs or autotrophs?

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.