What are abiotic factors?
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Explain the analyses provided by the study of human age pyramids?
What is a community? What is the difference between the concepts of community and population?
Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?
How does net primary production relate to the energy pyramids?
Explain what is the most abundant form under which nitrogen is found in nature?
Explain pops?
What do you mean by eutrophication?
What is the typical conformation of the age pyramids of underdeveloped countries?
What is commensalism?
How different are the concepts of migration, emigration, and immigration
What are the main limiting factors for the growth of a population?
Define parasitism?