Nitrogen cycle — key step?
Nitrogen fixation by bacteria
Food web — structure?
Interconnected feeding relationships
Photosynthesis — process?
Converts light energy to chemical energy
Ecosystem components?
Biotic and abiotic interacting components.
Photosynthesis — role?
Converts solar energy to chemical energy.
Food chains vs food webs?
Linear vs complex feeding relationships.
Energy transfer efficiency?
Approximately 10% between trophic levels.
Biogeochemical cycles?
Water, carbon, nitrogen cycles.
Limiting factors?
Regulate populations: resources, predation, competition.
Biodiversity — importance?
Vital for stability; loss leads to extinctions.
Answer 10 questions on Ecosystem Biology and Sustainability.
1. What is the primary function of photosynthesis in ecosystems?
2. In a food web, approximately what percentage of energy is transferred from one trophic level to the next?
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