1. Which of the following might be a result of adding a secondary consumer to the aquatic ecosystem in the accompanying illustration? A. In an illustrated flowchart, the movement of carbon atoms through an aquatic food chain is indicated by arrows. B. An arrow points from CO2 in the air to primary producers in the water. C. Arrows point from primary producers to primary consumers, and back and forth with primary consumers and decomposers and scavengers. D. Arrows also point from primary producers to decomposers and scavengers, and via sinking to dead cells and CaCo3 shells accumulating at the bottom of the water. E. Arrows point from primary consumers and from decomposers and scavengers via sinking to dead cells and CaCo3 shells accumulating at the bottom of the water. 2. Which of the following might be a result of adding a secondary consumer to the aquatic ecosystem in the accompanying illustration? a. a decrease in the population of decomposers b. a decrease in the carbon sink a decrease in the number of primary consumers c. an increase in the population of scavengers d. an increase in atmospheric carbon dioxide