Answer to Question 1ANS: B
The feeding relationships in the wild are not simple chains. There are multiple organisms at each
trophic level for an organism to eat. Information can be found in the section Primary Productivity Is
the Synthesis of Organic Materials
Answer to Question 2ANS: A
Carbon is the largest biogeochemical cycle. Carbon is considered the building block of life because it
can create many bonds. Information can be found in the section Elements Cycle between Living
Organisms and Their Surroundings