Phosphorus and sulfur are returned to the soil primarily by the actions of a) producers. b) decomposers. c) primary consumers. d) tertiary consumers. i dont know if its a or b : (

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees