which of the statements about the flow of energy through terrestrial and aquatic ecosystems is true; which of the following terrestrial biomes has the highest primary productivity per unit area?; which of the boxes represents a carbon source?; the majority of the nitrogen on earth can be found in which of the following reservoirs?; the diagram above best illustrates major processes in which of the following biogeochemical cycles?; the total rate of photosynthesis in a given area.; which statement best describes how matter moves within and between ecosystems?; which of the following statements is best supported by the diagram of the phosphorus cycle?