Compare photosynthesis and respiration with regard to the concept of net photosynthesis, which is the result of deducting respiration from photosynthesis. What is the importance of knowing the net...

Compare photosynthesis and respiration with regard to the concept of net photosynthesis, which is the result of deducting respiration from photosynthesis. What is the importance of knowing the net primary productivity of an ecosystem and how much biomass an ecosystem has accumulated?

Describe the usual trophic relationships between producers, consumers, and detritivores in an ecosystem. What is the place of humans in a trophic system?