Question 1
At the top of a pyramid of biomass are the
◦ primary producers.
◦ secondary producers.
◦ primary consumers.
◦ secondary consumers.
◦ tertiary consumers.
Question 2
Carbon is introduced into the atmosphere by all of the following means EXCEPT
◦ cellular respiration.
◦ volcanic eruptions.
◦ burning of fossil fuels.
◦ wind erosion.
◦ fire.