What are biotic factors?
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What is the main means by which autotrophic beings obtain energy?
What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?
In the short range what will happen to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies?
What is a biodigester?
Explain the predatism?
What are persistent organic pollutants?
Define a biodigester?
What is the typical conformation of the age pyramids of underdeveloped countries?
What is an example of intraspecific competition?
What are the advantages of leguminous crop rotation in agriculture?
Explain what is the most abundant form under which nitrogen is found in nature?
Define water cycle?