[问答题]
A student wants to set up an aquatic mesocosm usi
:k8 uyt1nz+xp2bk5 jmng seawater to sim
/c f*a ljchw iq;1c85mulate conditions in the food we
c15*hqcilcw/jamf; 8 b (shown in the image below) and test its stability. He used seawater and sand from the area to set up the system and added some small organisms to the mesocosm.
1.In the food web shown, identify an autotroph.
2.State a reason why phytoplankton shown in the food web would be a good addition to the mesocosm.
3.Discuss how saprotrophs perform a necessary function for the mesocosm.
4.Describe the disadvantages of using mesocosms in scientific investigations.
