What is the porosity of the silt sample? (the sediment volume for each sample is 400ml.)
a. 25.5%
b. 39.75%
45%
d. 53%

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present