What is the respective importance of carbon for the living beings?
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What is the group of aquatic beings composed of large number of photosynthetic beings?
How do biodiversity, the total number of living beings, and the biomass respectively vary during the ecological succession?
What do you mean by eutrophication?
Define pollution?
What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis?
What are plankton, nekton, and benthos?
What are some examples of interspecif competition?
Explain the typical conformation of the age pyramids of underdeveloped countries?
Explain the primary energy source for life on earth?
What is the most abundant form under which nitrogen is found in nature?
Explain the main chemical compounds that destroy the ozone layer?
What is numeric pyramid? What does it represent?