What is dry mass?
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Explain the difference between primary ecological succession and secondary ecological succession?
What is bioremediation?
What is the carbon cycle?
What are primary consumers? Can food chain present quaternary consumers without having secondary or tertiary consumers? Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?
What do energy pyramids represent?
Explain the typical conformation of the age pyramids of underdeveloped countries?
What is dry mass?
What is the cost-benefit relation regarding sewage treatment as a strategy to fight water pollution?
Explain water cycle?
What are deciduous trees?
What is biologic control?
Is the upward move of the warm air good or bad for the dispersion of pollutants?