What is the main source of energy in a clear-water stream in an open area?
◯ A. Dead leaves
◯ B. Chemosynthetic bacteria
◯ C. Algal blooms
◯ D. Sunlight
Which consumers lives in the intertidal zone?
◯ A. Jellyfish and octopuses
◯ B. Phytoplankton and photosynthetic algae
◯ C. Giant tube worms and chemosynthetic bacteria
◯ D. Limpets and crabs
Salt marshes, such as the one on the Cape Hatteras National Seashore in North Carolina, have a salinity that ranges from 18 to 30 ppt. Where does the salt come from?
◯ A. Human intervention
◯ B. Migratory birds
◯ C. Salt-tolerant grasses
◯ D. Ocean tides