Nitrogen cycle — key step?
Nitrogen fixation by bacteria
Ecosystem components?
Biotic and abiotic interacting components.
Food web — structure?
Interconnected feeding relationships
Photosynthesis — role?
Converts solar energy to chemical energy.
Photosynthesis — process?
Converts light 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.
Test your knowledge with 10 questions on Ecosystem Biology and Sustainability.
1. What is the primary function of photosynthesis in ecosystems?
2. What is the approximate efficiency of energy transfer between trophic levels in an ecosystem?
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