Build confidence with AP Environmental Science practice. Explore the paper preview below and use the questions to identify the skills you want to strengthen.
SECTION I: MULTIPLE CHOICE

Question 1 - 3 refer to the following
(A) Indicator species
(B) Keystone species
(C) Pioneer species
(D) Invasive species
SECTION II: FREE RESPONSE

Question 1: Researchers are studying the stream ecosystem shown in the following diagram.
