1. describe the structure of an ecosystem, and indude a description of an ecological community provide and label a sketch (or explain) of a food web that you might find in a wetland, showing at least eight different organisms 2. what is one commonly used way to delineate the boundary of an ecosystem? provide an example of how ecosystem boundaries are sometimes transitional 3. 4 what is biomass? why does the energy content decrease at each higher level of a food chain? 5. briefly outline the stages in ecological succession for a specific environment (you can use an exampie from the book or provide your own.)

Why might a single rock layer exhibit different types of sedimentary rocks within it? view available hint(s) why might a single rock layer exhibit different types of sedimentary rocks within it? such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed in a sequence over time. such a rock layer, termed a facies, when traced laterally represents a single depositional environment that formed over time. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed in a sequence over time.