Which of the following characteristics best describes the amazon rainforest? a. it is located in the northern section of the longest mountain chain in the world. b. it has the most concentrated biodiversity in the world. c. it is home to over 160 species of butterflies. d. it is the driest region in the world.

the answer is actually B. It has the most concentrated biodiversity in the world, according to edge nuity

answer; european crusades;

the only other powers were germany russia and uk and they were too busy fighting each other wearing each other down   that the us was becoming strong and they were becoming weaker