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Assessment
What is the primary source of energy for most aquatic ecosystems?
Photosynthesis
Chemosynthesis
Nutrient Recycling
Predation
Which of the following factors is NOT typically considered a defining characteristic of aquatic ecosystems?
Salinity
Water Depth
Soil Type
Water Flow
Which organism is typically at the top of the food chain in a freshwater ecosystem?
Plankton
Insects
Fish
Birds
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