I have encountered this question before, and the given diagram shows no producers. Moreover, it consists of pictures of five organisms, with no relationship being shown between them. Therefore, in order to make the model more accurate, Maria should add B. The sun and arrows to show the flow of energy.
Question 1: im not completely sure but either A or B. but i would go with A question 2: B-calvin cycle question3: B-splitting carbon dioxide. question 4: B-chlorophyll
