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Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?
Into which type of energy is the light used in photosynthesis transformed.
In a numeric pyramid to which tropic level does the base always refer?
Why is leguminous crop rotation used in agriculture?
How can the abundance and diversity of living beings in the tropical forests be explained?
What are the typical vegetation and the typical fauna of the deserts?
What are the main intraspecific ecological interactions?
What is the role of the ozone layer for the living beings?
What are the main factors that affect the growth of a population?
What are age pyramids?
How are the heterotrophic beings divided in the ecological study of food interactions?
What is the carbon cycle?
How different is the growth according to the biotic potential of a viral population from the growth according to the biotic potential of a bacterial population?
What is biosphere?
How are the grasslands of North America and of South America respectively called?
