In a numeric pyramid to which tropic level does the base always refer?
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Explain the main limitations for population growth
What is the cost-benefit relation regarding sewage treatment as a strategy to fight water pollution?
What is commensalism?
What is the respective importance of water, carbon, and nitrogen for the living beings?
Explain why transgenics are considered a threat to the environmental safety?
What are the destinations of the organic material fabricated by the producers?
Explain the three main types of tropic pyramids studied in ecology?
Can food chain present quaternary consumers without having secondary or tertiary consumers?
Explain the main interspecific ecological interactions?
What is transgenic food?
How do biodiversity, the total number of living beings, and the biomass respectively vary during the ecological succession?
Explain nitrogen cycle?