Complex networks of interconnected food chains are

food webs

Explanation:

third sentence of paragraph under that photo of curriculum and food web says "A food web is a group of connected food chains."

heres a picture of another version of a food web with all the lines and arrows

and a correct test grade

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; i believe the correct answer is (replication is not conservative);